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I have a fully-working Android Studio project (Java) that photographs urine test strips and reads the colours, but its interpretation layer is letting us down: colours are detected correctly, yet the final numbers it returns are wrong. I need someone to dig into the existing code, locate the flaw in the result-interpretation logic, and at the same time refine the overall algorithm so the readings become clinically reliable. Because I’m interested in both fixing the bug and improving the core method, you will be free to refactor, recalibrate, or even redesign parts of the analysis pipeline provided the camera capture and colour-extraction steps remain intact. OpenCV and native Android APIs are already integrated, so you will be working inside that framework. Key deliverables: • Diagnose and eliminate the logic error that produces incorrect results. • Rework the interpretation algorithm so that, when tested against my reference images, each parameter reports within the manufacturer’s stated tolerance. • Supply concise comments plus a brief changelog explaining the adjustments. • Push a clean, buildable Android Studio project back to my private Git repository.
Project ID: 40704874
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I can help fix the algorithm in your Android urine test strip reader. I've worked extensively with computer vision and image processing algorithms, which are core to making your test strip analysis accurate and reliable. Looking at your project, the key challenge is ensuring the algorithm correctly identifies color zones on the strip and maps them to accurate readings. I have strong experience with image processing pipelines—handling lighting variations, color calibration, and precise region detection. While my primary development work is in Python, I'm proficient in Java and have worked on Android projects involving camera integration and real-time image analysis. For TradeVision ([login to view URL]), I built real-time data processing systems that analyze visual chart patterns and market indicators with high accuracy. This required developing algorithms that handle varying input conditions and deliver consistent, reliable results—similar to what your urine test reader needs. The platform processes complex visual data in real-time, which translates directly to the image analysis challenges in your project. I've also developed computer vision solutions for the Binance Trading Bot ([login to view URL]), where pattern recognition and data extraction from visual elements were critical. These projects taught me how to fine-tune algorithms for precision and handle edge cases that affect accuracy. My approach for your project: 1. Review the existing algorithm to identify where readings become inaccurate 2. Debug the color detection and calibration logic 3. Improve the strip alignment and zone identification 4. Test against various lighting conditions and strip types 5. Optimize the algorithm for consistent, accurate results I understand this is a fully-working project that needs algorithmic refinement rather than a complete rebuild. I can work within your existing Android Studio codebase, make targeted improvements to the image processing logic, and ensure the fixes integrate smoothly with your current implementation. I'm ready to dive into your code, identify the issues, and deliver a more accurate algorithm. You can review my portfolio at [login to view URL] to see the range of technical solutions I've delivered. Let's talk and get started. Thank you.
$100 USD in 10 days
9.9
9.9
61 freelancers are bidding on average $75 USD for this job

The issue with your urine test strip interpretation seems to stem from the logic that translates those detected colors into numerical results. And I’ll dive into the existing code to pinpoint where the miscalculations are happening, I’ll refine the interpretation algorithm to make sure the readings align with the manufacturer’s tolerances. I’ll also make sure to keep the camera capture and color-extraction steps intact, just to make sure it’s exactly what you requested. I can have this fixed and ready for you to test first—only award the project once you’re happy with the results. So this way, there’s no risk on your end. My bid for this work is 48 USD and I’m ready to start immediately. Rajavel - Android, Java, and OpenCV developer with a lot of experience.
$48 USD in 10 days
6.0
6.0

The first thing I’d verify is whether the error is in the **color-to-concentration mapping**, calibration ranges, or the final parameter conversion logic. Since capture and color extraction are already working, I’d avoid touching that pipeline until the interpretation layer is isolated and reproduced against your reference images. I’d trace each strip parameter from extracted RGB/HSV/Lab values through its lookup/interpolation logic, compare the output against the manufacturer reference chart, and then recalibrate the thresholds or interpolation method where needed. If the current logic uses nearest-color matching only, I’d likely replace it with a more stable calibrated distance/interpolation approach while keeping the existing OpenCV framework. I can return a clean Android Studio Java project with the bug fixed, concise comments, and a changelog showing exactly what changed. Before I estimate accurately, can you provide **the manufacturer reference chart plus a small set of test-strip images with the expected readings**? That will let me validate the algorithm against known targets rather than guessing. — **Mehboob Katiyar**
$70 USD in 7 days
5.6
5.6

Hello, I can fix the incorrect result interpretation in your Android/Java urine test app while keeping the existing camera capture and OpenCV colour-extraction pipeline intact. I’ll trace the mapping/calibration logic, validate it against your reference images and manufacturer tolerances, and refine the algorithm where needed. I’ve worked with Android, OpenCV and image-processing algorithms, and can provide clean, buildable code with concise comments and a changelog. I’d be happy to review the project and discuss the current interpretation issue. Best regards, Fahad
$80 USD in 1 day
5.2
5.2

Hi, Your strip app already grabs colours correctly — the bug is in the interpretation/mapping step that turns those colours into wrong numbers. I’ll dig into that logic, keep camera capture and colour extraction as-is, and recalibrate/refactor the analysis so results sit within the manufacturer’s tolerance on your reference images. Comfortable in Java Android Studio + OpenCV. I’ve worked on Android image/sensor-style pipelines and debugging live codebases without breaking what’s already solid. $70 — fixed logic, improved calibration, short comments/changelog, clean push to your private Git repo. Best regards
$70 USD in 7 days
5.1
5.1

I can take over the existing Java Android Studio project, trace the complete interpretation flow, identify why the correctly detected colours are being converted into incorrect results, and improve the interpretation algorithm without changing the existing camera capture and colour-extraction layer. I have strong experience with Android/Java, image-processing workflows, OpenCV and debugging existing applications. Because this is a urine-strip interpretation application, I would also keep the distinction between algorithmic accuracy against your manufacturer/reference dataset and formal clinical validation clear. I can make the software meet the supplied reference/tolerance criteria, but clinical reliability ultimately needs appropriate validation data and testing. Could you provide the current Android Studio source code plus the reference strip images and expected values/results? That will let me reproduce the problem first and determine whether the main issue is the colour-to-value mapping, calibration, thresholds, normalization, or another part of the interpretation pipeline.
$70 USD in 7 days
5.3
5.3

You already have the camera capture and colour extraction working, so the main issue is isolating the interpretation logic that converts those measurements into incorrect test values. I have experience with Java, Android, OpenCV, image processing, and algorithm debugging, and I can trace the existing pipeline to identify where calibration, thresholds, mapping, or parameter interpretation is going wrong. I can refactor the analysis layer while keeping your capture and colour-extraction components intact, then validate the results against your reference images and manufacturer tolerances. I’ll also add concise comments, document the key changes, and return a clean buildable project through your private Git repository. I AGREE TO ALL.
$70 USD in 7 days
5.1
5.1

Hi, I can diagnose the existing Java interpretation layer while preserving the working camera capture and colour-extraction pipeline. I’ll trace each extracted colour through calibration, reference matching, unit conversion, thresholding, and final display to locate the incorrect mapping. I can then improve the method using controlled colour-space comparison, calibration curves, timing rules, and per-parameter validation against your labelled reference images. The result will include automated regression tests, concise comments, a changelog, and a clean Android Studio project pushed to your private repository. Software validation can demonstrate conformance to the supplied manufacturer tolerances, while any clinical-use claim would still require the appropriate device-level validation. Three technical questions: 1. Which strip manufacturer/model and parameters does the application support? 2. Do you have labelled reference images with expected values, capture times, and tolerance ranges? 3. Are results currently derived through RGB thresholds, HSV/Lab distance, lookup tables, or calibration equations? Best regards, Houssame
$150 USD in 1 day
5.8
5.8

****AVAILABLE TO START RIGHT NOW**** Hello, I understand the main issue is not the camera or colour extraction, but the interpretation layer producing incorrect urine-strip values. I can inspect the existing Java/OpenCV pipeline, identify the logic or calibration issue, and improve the result mapping while keeping the current capture and colour-detection components intact. I can refactor the interpretation logic, validate it against your reference images and manufacturer tolerances, and return a clean buildable project with comments and a clear changelog. I’ll focus on making the algorithm consistent and testable rather than changing parts that already work. Check my past work here: https://www.freelancer.pk/u/FizzaNadeemK I’m available to start right now and can review the existing project and test images immediately. Best Regards, Fizza
$50 USD in 2 days
4.4
4.4

Hello, I can work directly in your existing Android Studio/Java + OpenCV project and focus on the interpretation layer without disturbing the camera capture and colour-extraction stages that already work. My approach would be: • Trace the full path from extracted colour values to reported urine parameters • Reproduce the incorrect outputs using your reference images • Identify mapping, threshold, calibration, rounding, or lookup-table errors • Validate RGB/HSV/Lab conversions and manufacturer reference ranges • Refactor the interpretation logic into clear, testable modules • Add deterministic tests for every strip parameter and boundary condition • Compare results against your supplied manufacturer tolerances • Document each calibration/logic change • Return a clean, buildable Android Studio project through Git I’ll avoid “tuning until examples pass”; the goal is a reproducible algorithm that behaves consistently across the complete reference set. For a medical-use product, software accuracy can be validated against your supplied reference data, while any formal clinical/regulatory validation should remain a separate verification step.
$70 USD in 2 days
4.2
4.2

With a comprehensive background in Android and Software Architecture, I am the perfect fit for your project. I have extensive experience developing complex algorithms and optimizing their functionality. My work can be found in a range of industries, from web platforms to mobile applications, and particularly in AI-powered solutions. Refactoring, recalibrating, or even redesigning sections of the analysis pipeline are all well within my expertise. Your project aligns well with my skill set, where I have worked on numerous optimization tasks to enhance performance and create reliable outputs. Furthermore, I've successfully integrated OpenCV and native Android APIs into previous projects, giving me a solid understanding of the frameworks you're using. I understand that the task at hand is not merely about eliminating a logic error but ensuring that each parameter reports results within the manufacturer's stated tolerance while adhering to the framework provided. This requires a nuanced approach and I guarantee precision and thoroughness in achieving this goal. Rest assured that your project will be handled with professionalism and delivered on time. Upon completion, I will provide concise comments detailing adjustments made as well as a brief changelog. Choose me for a meticulous approach that delivers both short-term fixes and long-term maintainable solutions.
$70 USD in 7 days
4.4
4.4

Hi, I am interest your project. I can check the problem and fix it. In addition I am sure there should be point(s) that can be increased according to algorithm tolerance. I can start right now. Hope to hear from you soon. Thanks
$55 USD in 7 days
4.2
4.2

I’ve gone through the requirement carefully, and this is a focused Android/OpenCV debugging and algorithm task I can handle. The key is to leave the existing camera capture and colour-extraction pipeline intact, then trace exactly where the correctly detected colour values are being mapped to the wrong urine-test results. I’d validate the interpretation logic against your reference images and manufacturer tolerance ranges, then refactor or recalibrate the decision layer where needed rather than changing working capture code unnecessarily. I’ll work directly in the existing Java/Android Studio project, keep the OpenCV integration intact, add concise comments around the corrected logic, and provide a clear changelog with the final buildable project committed to your private repository. Share the Android Studio project, reference images, and manufacturer tolerance/specification data, and I can start by isolating the faulty interpretation step.
$70 USD in 6 days
4.8
4.8

The strip reading is likely failing on lighting or color calibration, not the core logic. I would add a reference color card check in OpenCV before analyzing each strip, so results stay consistent across phones and lighting conditions. I can dig into your Java project today and have a fix ready within 3 days. These numbers are based on what's in the post, final scope may shift once I see the code. Want me to take a quick look first?
$60 USD in 5 days
3.4
3.4

With over 8 years of solid experience in Android app development and Java programming under my belt, your project, "Android Urine Test Algorithm Fix" is right up my alley! I've worked extensively with image processing, and the integration of OpenCV as well as native Android APIs. My prior experience in fine-tuning algorithms, backed by my strong understanding of database management and optimization, will be invaluable in handling this particular project. What sets me apart is my ability to refactor, recalibrate, or even redesign segments of an existing system without compromising orderliness or efficiency. If given the chance to work on your mobile application, not only will I efficiently eliminate that nagging error in the interpretation logic but also revamp the overall algorithm for more reliable results that meet manufacturer standards. Once done, I assure you of a thoroughly functional final product with clean yet concise commenting to make future modifications easy. With a Git workflow already ingrained in me and a knack for promptly delivering upon projects while keeping within scope and budget limits, hiring me means the best skillset combined with professional commitment towards your success. Let's connect and discuss this fantastic opportunity further!
$70 USD in 7 days
3.4
3.4

Hi there I can investigate and fix the algorithm in your existing Android urine-test application, focusing on accurate result processing, image/data analysis, and reliable behavior across supported devices. I have 20 years of software development experience and can work directly with an existing Android codebase. My approach Algorithm Analysis — Review the current calculation/processing logic and identify incorrect assumptions, edge cases, or implementation issues. Image/Data Processing — Debug the test-strip/sample analysis and ensure inputs are processed consistently. Result Accuracy — Compare the application's output against your expected/reference results and correct the relevant logic. Android Integration — Ensure the fixed algorithm works correctly with the existing camera, sensors, UI, and data flow. Testing — Test different sample conditions and edge cases using your reference data to verify consistent results. Code Quality — Make targeted changes while preserving existing functionality and documenting the important fixes. Quick questions 1. Is the algorithm based on camera/image processing, sensor data, or manually entered values? 2. Do you have the existing Android source code and current test data? 3. What incorrect results or cases are currently occurring? 4. Do you have reference/expected results for validation? 5. Which Android/Kotlin/Java version and image-processing libraries are currently being used? Thanks
$100 USD in 7 days
3.6
3.6

Hi, I understand you need someone to address the logic error in your urine test strip app's interpretation layer. It's crucial that the final results reflect accurate readings, and I can help with that. I’ll dive into your existing Java code, identify the flaws in the result-interpretation logic, and refine the overall algorithm to make sure it meets clinical standards. I've worked with OpenCV and similar algorithms before, particularly on projects that required precise color detection and interpretation. This allows me to tackle the challenge effectively. I can deliver a fixed and improved Android Studio project back to you in 3 days for $50. Shall we kick things off?
$50 USD in 3 days
3.1
3.1

Hi, I have already worked on a similar Android application that uses image-processing algorithms to detect kidney health. So, I believe I can help you identify and fix the issues in your application. I’d be happy to discuss the project further. Please ping me so we can connect and discuss the details. Regards, Amol
$100 USD in 7 days
3.2
3.2

Hi, I can review your existing Java Android Studio project, trace the result-interpretation logic causing incorrect values, and refactor the calculation pipeline while keeping the current camera and colour-extraction stages intact. I’ll validate the revised logic against your reference images and manufacturer tolerances, add concise comments and a changelog, and return a clean buildable project through your private Git repository. Looking forward for your positive response in the chatbox. Best Regards, Hunain T
$100 USD in 2 days
2.9
2.9

Hi, Thanks for sharing your project. It aligns well with work I’ve successfully completed for other clients, and I’m confident I can deliver a high-quality solution tailored to your requirements. Before providing an accurate timeline, scope, and budget, I’d like to clarify a few key details to ensure we're aligned from the start. Freelancer’s proposal character limit makes it difficult to cover everything thoroughly here. If you're available, let's connect via chat. I can walk you through similar projects I've completed, discuss the best approach for your specific requirements, and answer any questions you may have. Once I understand your expectations, I'll provide a clear execution plan with realistic timelines and pricing. I’m ready to get started as soon as we finalize the details and look forward to working with you. Best regards, Mayank Sahu
$70 USD in 7 days
3.0
3.0

Hi — your issue sounds like the colour readings are fine but the mapping from measured colour to concentration is off, so the fix lives in the interpretation layer, not capture. I'd start by reproducing wrong outputs against your reference images, then trace how extracted RGB/HSV values get converted to each parameter: usually the culprit is a bad reference-chart mapping, wrong colour space for interpolation, or lighting/white-balance not normalised before lookup. I'd rebuild that step to interpolate in a perceptual space against calibrated manufacturer swatches, then validate every parameter lands inside stated tolerance, leaving clear comments and a short changelog before pushing a clean, buildable project to your repo. I've taken Android apps through Play review end to end, so the build hygiene side is second nature. Do you have the manufacturer's official colour chart with exact swatch values per level, or should I derive the reference points from your labelled reference photos?
$87 USD in 8 days
2.0
2.0

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