Computer assited remote transcription pay scale işler

As the client, I require the services of a skilled copy typist who can accurately duplicate a PDF document. The original document contains tables, so a certain level of precision and attention to detail will be necessary. Your tasks: - Copy typing...client, I require the services of a skilled copy typist who can accurately duplicate a PDF document. The original document contains tables, so a certain level of precision and attention to detail will be necessary. Your tasks: - Copy typing a PDF document - Transcribing tables as text - Ensuring 100% accuracy The ideal freelancer for this job has previous experience with copy typing and transcription, and is familiar with working with PDF documents and tables. A strong understanding of English and high attention to detail is i...

Job Title: Blockchain Architect for Gaming Innovation Job Description: We're seeking a talented blockchain architect to lead the creation of a pioneering blockchain network tailored for gaming. You'll design and implement smart contracts, collaborate with gam...experience. Requirements: Proven experience in blockchain architecture and development. Proficiency in smart contract development (e.g., Solidity). Creative problem-solving skills and a passion for innovation. Strong communication and collaboration abilities. Gaming industry experience or a strong interest is preferred. Additional Information: Freelance position with flexible hours and remote work option. Compensation based on experience and project scope. We encourage applicants from diverse b...

I'm seeking a professional in Python with experience in computer vision, specifically with DVS 346 cameras. The goal of the project is to: - Detect human movements: Standing, walking, sitting, waving, jumping, running - Calculate the speed of detected movements The project will take place in an indoor environment. Ideal candidates should have: - Proficiency in Python - Expertise in computer vision - Experience with DVS 346 cameras would be a plus This is a unique project that requires attention to detail and an understanding of both human movement and computer vision principles. The ideal freelancer will be able to deliver accurate movement detection and speed calculations. I already have the DVS 346 camera for this project.

I'm in need of a proficient typer to execute a medium volume job, of between 100 and 500 pages. Here are the details: - You have to retype handwritten notes into a Microsoft Word document format. Accuracy and attention to detail are paramount, as the formatting needs to adhere strictly to the layout of Microsoft Word. - Although the task does not come with a tight deadline, efficiency in completing the job would be highly appreciated. - Experience in a similar role would be an advantage, as the typer needs to have stellar knowledge in document formatting and editing in Microsoft Word. This project does not require rush execution, therefore making it a perfect opportunity for those balancing multiple projects or those new to freelancing aiming to prove their abilities.

...Selected team will be having opprtunity to work for long term! Skills and Experience: - Extensive experience in reporting and analytics!!!*** - Extensive experience in Laravel development - Proficiency in Laravel customization and optimization - Strong understanding of Gitlab - version control !* - Strong understanding of web development principles and best practices - Ability to work on a large-scale project and deliver high-quality results - Excellent problem-solving skills and attention to detail - Database Design & Management: The ability to design and manage a highly organized, efficient database is crucial. - API Integration: We expect the team to integrate various APIs appropriately for a seamless integration of different platforms !!!*** Skills that would be benefic...

...Selected team will be having opprtunity to work for long term! Skills and Experience: - Extensive experience in reporting and analytics!!!*** - Extensive experience in Laravel development - Proficiency in Laravel customization and optimization - Strong understanding of Gitlab - version control !* - Strong understanding of web development principles and best practices - Ability to work on a large-scale project and deliver high-quality results - Excellent problem-solving skills and attention to detail - Database Design & Management: The ability to design and manage a highly organized, efficient database is crucial. - API Integration: We expect the team to integrate various APIs appropriately for a seamless integration of different platforms !!!*** Skills that would be benefic...

I'm in need of a logo design for a range of home furnishings, including products for kitchen cabinets, bathroom, home walls, decor items, as well as walls and fences. The logo should embody an elegant and luxurious style. Key Requirements: - The logo should be suitable for display on a variety of surfaces, so it should be versatile in terms of scale and color. - It should exude an air of sophistication and high-end appeal, as it will be associated with premium home goods. Skills and Experience: - Prior experience in creating logos for home furnishing or interior design brands would be highly advantageous. - A strong portfolio that showcases your proficiency in creating elegant and luxurious designs. - Proficiency in creating versatile logos suitable for various surfaces and p...

...Selected team will be having opprtunity to work for long term! Skills and Experience: - Extensive experience in reporting and analytics!!!*** - Extensive experience in Laravel development - Proficiency in Laravel customization and optimization - Strong understanding of Gitlab - version control !* - Strong understanding of web development principles and best practices - Ability to work on a large-scale project and deliver high-quality results - Excellent problem-solving skills and attention to detail - Database Design & Management: The ability to design and manage a highly organized, efficient database is crucial. - API Integration: We expect the team to integrate various APIs appropriately for a seamless integration of different platforms !!!*** Skills that would be benefic...

NO NEGOCIATION PRICE - NO NEW FREELANCERS I need a small billboard picture to be upscaled to a larger v...this image will be for outdoor advertising. Key responsibilities: - Upscale the small picture to a size suitable for a billboard - Maintain the image quality and resolution during the upscaling process - Ensure the image is suitable for outdoor advertising - Deliver the final image in the appropriate format Skills and expertise required: - Experience with image upscaling and editing for large-scale prints - Understanding of color, resolution, and image quality in print materials - Knowledge of outdoor advertising specifications - Attention to detail and an eye for design. Please provide examples of similar work you've completed in the past, and outline your approach t...

We are seeking skilled proofreaders and transcriptionists (preferably English native speakers) to assist in completing and refining transcriptions. Your role will involve transcribing any missing sections and conducting a thorough proofreading of the existing transcribed parts. To ex...assist in completing and refining transcriptions. Your role will involve transcribing any missing sections and conducting a thorough proofreading of the existing transcribed parts. To expedite the process, we plan to distribute the work among multiple linguists, as these transcriptions are required urgently. Compensation for this project is set at $0.005 per word, whether for proofreading or transcription. Additionally, candidates must be willing to complete a small sample test as part of the selectio...

Do you like getting freebies and earning a decent side income at your spare time? If so, become a product tester for Deal Select today! 3 Benefit of participating - Keep all received product samples. - Participate anytime, anywhere; each product testing project takes 10-15 minutes to complete. - Great side income at your spare times. Candidates should meet the criteria below. • Enjoy trying out different / new products. • Capable of formulating constructive reviews • Individuals residing in the US or Canada. Being familiar with the online consumer product landscape of US and Canada regions. Your responsibility: Once you have received the item, utilize the item for a specified amount of time. Then formulate a product review. The review is to be written within a word doc...

I need help to finish my reactjs and nodejs project following a computer problem.

...to build a large, modern two-story coastal home in St. Johnes County, Florida Key Project Details: The home has 3 leaving units- The home's size is around 6,000 square feet. We have preliminary architectural drawings - The architectural style is contemporary - The structure is to be a two-story residence with expansive views. Preferred Experience and Skills: - Extensive experience in medium-scale residential costal construction is essential. - Familiarity with modern architectural styles is required. - Experience with coastal construction is a plus, considering environmental and regulatory challenges. - A portfolio showcasing previously completed projects, especially relating to coastal or modern architecture is desirable. The successful team will be detail-oriented, c...

You must work through anydesk I have mandrill transaction email. you must help me set it up in my laravel and make emails send. Also fix laravel default reset password function. Must work through anydesk

We are seeking a talented illustrator to join our team on an ongoing basis. The ideal candidate will have experience creating simple, colorful, and expressive emblems that can be ...based on feedback from team members and clients. Qualifications: Proficiency in illustration software such as Adobe Illustrator or Procreate. Strong portfolio showcasing emblem and icon design skills. Understanding of embroidery design principles and limitations. Ability to work collaboratively in a fast-paced environment. Excellent communication skills and attention to detail. This is a remote position, and we welcome applicants from around the world. If you have a passion for creating unique and vibrant designs, we would love to hear from you! (We've added some work as well as examples we&...

I require a freelancer with strong accounting knowledge, specifically in job costing, to help me transcribe the steps and procedures from a job costing video into clear, written instructions. You will need to watch and understand the content then transcribe it with meticulous care and attention to detail.

I'm seeking a proficient freelancer to model a battery energy storage system using MATLAB/Simulink. The system is intended to serve as a backup power supply for a large industrial facility. Key Project Details: - Intended Use: The primary function of the battery energy storage system is to serve as a reliable backup power source. - Scale: I'm looking for a model that's specifically tailored for a large industrial facility. This involves understanding the energy consumption patterns of such an environment and designing a system that adequately meets the facility's energy needs during power outages. - Software Preference: Due to the complexity of the project, the ideal candidate should have a strong background in MATLAB/Simulink. This tool is essential for the a...

I'm seeking an expert for a data migration endeavor from Salesforce Classic to Lightening Starter. This project involves: - Moving over 12,000 Accounts and Opportunties - Several custom fields need to be replicated in ...certification or proven experience in Salesforce data migration - Familiarity with data sets (10,000+ records) - Ability to mitigate risks involved in data migration and ensure full data integrity - Good problem-solving skills and a keen attention to details Bidders without significant experience in Salesforce migrations, especially those involving large-scale data sets, may not be well-suited for this task. It's essential to consider the scale and complexity of this project before bidding. I am open to discussing the project in more detail i...

I'm looking for a skilled C++ developer to create a CAD software primarily focused on 3D modeling, compatible with Windows OS. Key Features: - Primarily 3D Modeling: The software should excel in 3D modeling capabilit...C++ development, particularly in CAD software, and can commit to creating a high-quality, Windows-compatible CAD software, I'm keen to hear from you. Extra info: I am looking at a long term contract of 1 year, renewable each year. I will conduct a written test before making offer, candidate has to be ok with taking a test. So this will be like a steady job, except that work will be remote and flexi, as long as candidate delivers 160 hrs per month and daily skype calls. I may also require an onsite visit to singapore for orientation, visit ...

I need a thorough and capable freelancer to assist in data entry tasks. This project revolves around seeking out the contact details of companies provided by me. Key tasks will include: - Google each company name I provide - Gather relevant contact details such as phone numbers, emai...contact details of companies provided by me. Key tasks will include: - Google each company name I provide - Gather relevant contact details such as phone numbers, email addresses, and the company's website As I am seeking information from a range of different companies without specific criteria, being detail-oriented and accurate will be crucial. Experience in data cleaning, analysis, and transcription would be advantageous. Understanding and utilization of web scraping techniques would also...

...to AWS Sagemaker. Your task will be to: - Understand two models I have running locally. One is a Rstudio logistic regression model, and the other is a pySpark XGboost also running on local. - Migrate These two models to AWS SAGEMAKER. Data will be on S3 -Prepare models to run on sagemaker totally, so that we can do training and testing 100% on sagemaker.-Models are already running on a local computer, but I need to move them to Sagemaker 100%. Data is on S3 already. -You need to configure and prepare Sagemaker from end to end, and teach me how you did it, since I need to replicate it in another system. -I will give you the data and access to AWS Ideal Skills and Experience: - Demonstrated experience in performing similar migrations - Proficiency in Python, R, and Spark langua...

I'm in need of a lab-scale crystalizer design, intended for research and experimentation purposes. The specific type of crystals to be produced has yet to be finalized. The desired crystal size range for the crystalizer is millimeter-sized crystals. Ideally, the successful designs will be: - Efficient in producing the desired crystal size - Support users with varying level of expertise in crystal formation - Easy to operate and maintain The ideal freelancer for this project will have: - Proven experience in designing lab-scale equipment - Solid knowledge in crystal formation and structures - Proficiency in using CAD and other design software.

This project calls for a proficient web developer with expertise in setting up a large-scale school fee management system. The platform should support over 500 users and must integrate the following: - Online Payment Processing: Facilitate seamless, remote payment of school fees, reducing the need for physical transactions. - Automated Fee Calculation: Implement real-time fee computation, enhancing financial accuracy and administrative efficiency. - Detailed Fee Reports: Generate comprehensive reports on fee transactions to aid administrative decisions and keep accurate historic records. Furthermore, the system needs to incorporate specific security measures, including role-based user access, to ensure the privacy and safety of user data. The ideal candidate for this pr...

...flowcharts, and technical specifications. Testing and Validation: * Plan and execute data conversion testing, including unit testing, integration testing, and user acceptance testing. Data Security: * Implement data security measures to protect sensitive and confidential information. * Ensure compliance with data privacy regulations and company policies. Job Requirements: * Bachelor's degree in Computer Science, Information Systems, or a related field. * 8+ years of industry experience, with at least 2 years in Oracle Cloud Fusion projects. * Proven experience as a Data Conversion Developer with a focus on Oracle ERP Cloud data migration. * Strong SQL and PL/SQL skills for data querying and manipulation. * Solid knowledge of ETL tools and data integration techniques. * Profi...

I have several thousands PDFs that need to be read, interpreted and transcribed into a supplied spreadsheet format. It is important that you: 1) Have an existing team to help with a task that is estimated to take 2 weeks 2) Proficiency in PDF to Excel transcription 3) Ability to complete the task efficiently Applicants based in India only.

...React programmer to join our team in a long-term remote consulting role. The selected candidate will work closely with another full-stack programmer, contributing to the development of various applications, including SaaS. The various software will interact with a Node.js backend and the user interface will be designed on Figma. Responsibilities: - Ability to devise practical solutions independently, following discussions with the CEO/CTO. - Participate in video conferences as needed. - Actively collaborate with the programming team, including peer-reviewing code. Essential Requirements: - At least 2 years of experience with React. Applications without this experience will not be considered. - Experience in developing medium to large-scale React applications. - Provide a...

I require top-notch cyber security services focused on taking my network security, data protection, and web application pentesting to the next level. Ideal candidates should have: * Proven experience in network protection, defending sensitive data, and pentesting * Familiarity with PCI DSS and HIPAA standards. * Capacity to efficiently handle small-scale projects I expect strict adherence to compliance standards throughout the project. Your technical prowess and professional comportment will significantly contribute to the success of this project. The job requires a proactive approach, with a keen attention to detail to spot inconsistencies and breaches before they become significant problems.

I'm looking for a computer vision expert who can design a program for me that can read handwritten French texts from scanned documents. Key Requirements: - The program should be able to accurately recognize the handwritten text. - The primary source of the images will be scanned documents, so the program should be able to work with this type of image source seamlessly. - Since the texts are in French, a good understanding of the French language will be a huge plus. Ideal skills and experience: - Proven experience in computer vision and text recognition with a strong portfolio of prior projects. - Specific experience in recognizing handwritten text is a must. - Proficiency in French language would be a significant advantage. - Experience working with scanned documen...

Recruitment Requirements: Have at least 5000 followers on all social networks. Recruitment Scope: Global Job Description: Promote LunarLens(a short video app) with your unique content style or utilize content provided by us. cooperation duration: 7 days. (weekly renewal)

I am seeking a skilled artist to create a large 16x20 inch portrait in oil from a provided photo. The style should be realistic, capturing the fine details and true likeness of the subject. Ideal Skills and Experience: - Proficiency in oil painting - Excellent capability to transition a photo into a realistic portrayal - Previous experience in large scale projects Please attach previous similar works with your proposal for consideration. The chosen freelancer will be based on both talent proven in previous works, and bid.

I need a capable graphic designer who can create 2-3 urban-themed backdrop designs for my store. The backdrops should be medium in size, ranging from 5x5 to 10x10 feet. Ideal Skills and Experience: - Proficient in graphic design - Experience in creating backdrops or large-scale designs - A keen eye for urban aesthetics - Able to deliver 2-3 unique designs - Can work in close collaboration with me to ensure the ideas are aligned Please include relevant samples of your past work in your bid.

...Selected team will be having opprtunity to work for long term! Skills and Experience: - Extensive experience in reporting and analytics!!!*** - Extensive experience in Laravel development - Proficiency in Laravel customization and optimization - Strong understanding of Gitlab - version control !* - Strong understanding of web development principles and best practices - Ability to work on a large-scale project and deliver high-quality results - Excellent problem-solving skills and attention to detail - Database Design & Management: The ability to design and manage a highly organized, efficient database is crucial. - API Integration: We expect the team to integrate various APIs appropriately for a seamless integration of different platforms !!!*** Skills that would be benefic...

Title: Expert Resume Editor Needed for Entry-Level Embedded Software/Firmware Engineer Position Project Description: I am in search of a seasoned resume editor with a technical background in embedded software and firmware engineering to refine and enhance my 1-2 pag...and overall fluency. Candidate Requirements: The ideal candidate will have a proven track record in crafting and editing resumes or CVs, especially within the realm of embedded systems engineering. A keen eye for detail, a strong grasp of industry-specific terminology, and a strategic understanding of resume structuring for maximum impact are crucial. A background in Electrical Engineering, Computer Science, or a related field is highly advantageous to grasp the complexities of an embedded software/firmware enginee...

As a Flutter Developer, you will review the software specifications and UI mock-ups, develop a cross-browser mobile application from scratch, and lead the application testing effort. You'll work alongside a backend developer and a UI designer ...and practices. · Participate in testing, quality assurance, and bug fixes as part of the CI/CD cycle. Qualifications and Requirements: · 3 to 5 years of experience developing mobile apps natively in iOS and/or Android. · 3 years of commercial experience developing and delivering Flutter-based apps. · Good understanding of state management, Flutter Flavors, and app architecture. · Experience in a remote software development environment. · Experience with building apps and software for consumer g...

I am looking for a skilled 3D Arch Viz Artist proficient in using 3Ds Max, Vray, Blender, or Sketch Up. The project involves creating a 3D visualization of a medium-sized commercial building ranging from 5,000 - 20,000 sq ft. Required Sk...proficient in using 3Ds Max, Vray, Blender, or Sketch Up. The project involves creating a 3D visualization of a medium-sized commercial building ranging from 5,000 - 20,000 sq ft. Required Skills & Experience: - Expertise in 3Ds Max, Vray, Blender, or Sketch Up - Experience in visualizing commercial architectural projects preferred - Understanding of architectural structures and creating accurate scale models Your task would be to capture the intricate details of the building's architecture and deliver a comprehensive 3D view of th...

I'm seeking a proficient business consultant in Phuket only who specializes in financial planning and can help my company scale up. • Expertise Required: - Comprehensive financial planning including budget, cash flow, and investment strategies. - Market research and demographic analysis to develop a strategic marketing plan. - Creating a resilient business plan based on the above, specifically aimed at growth. • Marketing Channels: - Familiarity with a variety of channels is preferred but is not mandatory. The ideal candidate should have a strong background in strategic financial planning and business consulting with demonstrable understanding and experience in creating tailored marketing strategies. Knowledge of location analysis is a big plus. Your ...

As a small-scale textile production firm, I need a consultant specialized in fabric sourcing. Our textiles mainly incorporate Cotton, Polyester and Lycra. I'm looking for guidance to efficiently source quality materials that fit into our production process. Familiarity with these materials and having a knack for identifying quality sources will be ideal for this role.

I'm looking for a tutor who can guide me through my college course on computer organization. This course covers a wide range of topics including permission models, system architecture, concurrency, virtual memory, cryptographic primitives, and TCP/IP networking. I need a tutor who can help me understand difficult concepts and prepare for exams. Key Requirements: - Should be knowledgeable in all the topics listed. - Ability to explain past exam solutions. - Experience tutoring in computer organization or related subjects. - Able to communicate via instant messaging for convenience. - help in exam preparation Here is a list of all the topics covered in this course Building and Introduction - Basics of .o, .a, .so files, dynamic/static linking, and makefiles. Accounts an...

I am looking for a virtual a...various types of information into spreadsheets or databases, ensuring accuracy and efficiency. - Guest Interactions: Good communication skills are essential. The assistant will be in charge of interacting with guests, handling queries, and providing assistance in a professional manner. Ideal Candidate: - Experience in virtual assistance or similar roles. - Proficient in the use of mobile apps, computer software, and web applications for virtual assistance tasks. - Excellent organizational and time-management skills. - Strong communication abilities. - Attention to detail and accuracy in data entry tasks. If you are reliable, proactive, and have the necessary skills for this role, I'd like to hear from you. Please include relevant experience in...

...administrating and troubleshooting Netsuite/Celigo connectivity to/from Salesforce. Must be 4+ years Netsuite TechnoFunctional with strong developer expertise and hands on design, development, deployment and maintenance of integration processes between applications across cloud and/or on premise using Celigo platform (Cloud Integration, Application Integration and Enterprise web services APIs in a remote or in-person capacity as requested by the client, including but not limited to video or onsite interaction - Strong with O2C, R2R, P2P, Inventory Management, AP/AR, GL and other Netsuite areas + - Excellent with building workflows and scripting - Managing, Monitoring, Sustaining, Troubleshooting and supporting existing integrations, SOA Architecture and Celigo platform with Sa...

Hello, I hope you're doing well. I came across your profile and was impressed. I have a project involving deep learning and computer vision, and I would like to hire you for it. Are you available?

I require top-notch cyber security services focused on taking my network security, data protection, and web application pentesting to the next level. Ideal candidates should have: * Proven experience in network protection, defending sensitive data, and pentesting * Familiarity with PCI DSS and HIPAA standards. * Capacity to efficiently handle small-scale projects I expect strict adherence to compliance standards throughout the project. Your technical prowess and professional comportment will significantly contribute to the success of this project. The job requires a proactive approach, with a keen attention to detail to spot inconsistencies and breaches before they become significant problems.

I'm seeking a seasoned AWS IoT specialist to set up an IoT platform for a transportation fleet. Key requirements include: - Strong knowledge of AWS IoT: You should be well-versed in the core concepts and functionalities of AWS IoT. Specific experience with setting up the platform for remote device management is a plus. - SAAS implementation: I'm looking for someone who can not only set up the IoT infrastructure but also incorporate it into a Software as a Service framework. Experience in developing SAAS applications is crucial. - Transportation Industry Expertise: A background in the transportation industry or related fields is highly desirable. This will enable you to understand the specific needs of the project and tailor the IoT setup accordingly. - Excellent Commu...

I'm in need of an experienced Angular developer who is proficient in Java and TypeScript. The project primarily involves API integration and will require familiarity with cloud services, particularly AWS. Key Requirements: - Strong Angular experience (at least 80% of your work history) - Proficiency in Java (at least 20% of your work history) - Solid understanding o...least 20% of your work history) - Solid understanding of TypeScript and JavaScript - Previous experience with API integration - Familiarity with AWS /azure. Please be aware that I am seeking to work with individuals only - no companies. Additionally, I will require a brief interview to assess your skills and suitability for the project. Your ability to communicate effectively and work well in a remote setting is...

I'm seeking a Django developer to assist in a medium-scale project. The ideal candidate should have experience with the following functionalities and features: - User authentication and authorization - Database integration - Dashboard and charts I have a basic idea of the project in mind and would appreciate help in refining the design and interface. The project size is moderate, with multiple pages and moderate complexity. The successful candidate will need to have a good understanding of Django, data handling, and be able to create visually appealing dashboards and charts. A background in UI/UX design is a plus as you will be assisting in refining my basic ideas. Please provide examples of similar projects you have worked on.

I need a computer vision expert, with expertise in image segmentation. More details in chat

I'm in need of a freelancer capable of creating a simple, minimal logo for my business as well as providing transcription services. Logo Design: - Create a simple and minimalistic logo - Understand the brand and translate it into the design - Must be experienced with graphic design software (Adobe Illustrator, Photoshop, etc.) Transcription Services: - Transcribe various audio files - Must possess fast and accurate typing skills - Proficiency in English language is a must. The copy-pasting part of the project was skipped, so no specific services are required in regard to this task. Considering the nature of this job, I welcome freelancers with good time-management skills, efficient work processes and keen attention to detail.

I am seeking a highly-skilled web desig...registration/login system: Allow customers to create their own profiles to streamline the purchase process and keep record of their transactions. - Product review system: Customers should have the capability to review products after purchase, contributing to a vibrant, interactive consumer community. The inventory for the website will be less than 50 products initially, thus experience working with this scale is favored. Proficiency in various e-commerce platforms, UX/UI design, and backend programming would be advantageous for the effective completion of this project. An understanding of SEO principles and conversion rate optimization would be a bonus. Please submit your bids complete with portfolio examples of previous e-commerce websit...

Subject: Urgent Need for Professional Tax Filing and Monthly Bookkeeping Services Project Description: I am seeking a highly skilled and knowledgeable tax professional who can urgently assist with filing tax extensions today and subsequently handle both personal and corporate tax filings for several of my clients. This opportunity also includes an ongoing requirement for simple monthly bookkeeping. Please bid first on price for personal and business taxes gig. You can message me about the bid for: personal Taxes only with extension filed today. Message me what your bid is for personal tax returns and for monthly bookkeeping services for small businesses with the client's Quiquen or Quickbooks account. Key Responsibilities: 1. **Immediate tax extension filing** for multiple client...

Enhanced algorithm for SGM - Experienced person for computer vision - Experienced person for SGM - PHD degree for computer vision - Experienced person with the ability to analyze existing world-wide-best papers for SGM - Ability to implement computer vision algorithms in C/C++ - c/c++ - opencv