Object measurement from images, requiring perspective correction
Budget: £250 – £750 GBP
I am looking for a freelancer who can help me with a project involving object measurement from images, specifically requiring perspective correction.
Object Measurement:
- The project involves calculating inside leg measurement from full body photos of people (faces will be anonymised) for the purposes of making clothing. We know the user's height in cm. However, due to a range of perspectives (ie the camera taking the photo is at different heights and angles), it isn't possible to calculate the inside leg measurement accurately using a simple (pixel) count of the distance relative to total height in pixels, as the camera angle is not "face on" at 90 degree, and therefore the legs are a smaller proportion in the jpeg image than they would be in reality.
Image Selection:
- I have specific images that I would like the freelancer to use for the measurements.
Accuracy Requirement:
- The desired accuracy of the measurements is high, with no more than 1 - 2 % error.
Skills and Experience:
- The ideal freelancer should have experience in photogrammetry or a related discipline.
- Knowledge of perspective correction techniques is necessary.
- Familiarity with image measurement and analysis tools is necessary.
Outputs:
In the first instance, we want to understand if it is possible to correct perspective from an image. If yes, are you able to both correct the perspective and then provide leg length estimates either in CM or as a % of total body height (we will show exactly where to measure) if we provide the user body height in CM.
Please see attached example of the kind of images we have (they are all different 'users') - the green line indicates the correct start and end points of "inside leg measurement" for clothing.
If you have the expertise and skills to handle this project with high accuracy, please get in touch. We have budget and would start with a test on 3 images before then commissioning a larger number (ca 25 different images). We can discuss cost per image once we know what is actually possible here.
Object Measurement:
- The project involves calculating inside leg measurement from full body photos of people (faces will be anonymised) for the purposes of making clothing. We know the user's height in cm. However, due to a range of perspectives (ie the camera taking the photo is at different heights and angles), it isn't possible to calculate the inside leg measurement accurately using a simple (pixel) count of the distance relative to total height in pixels, as the camera angle is not "face on" at 90 degree, and therefore the legs are a smaller proportion in the jpeg image than they would be in reality.
Image Selection:
- I have specific images that I would like the freelancer to use for the measurements.
Accuracy Requirement:
- The desired accuracy of the measurements is high, with no more than 1 - 2 % error.
Skills and Experience:
- The ideal freelancer should have experience in photogrammetry or a related discipline.
- Knowledge of perspective correction techniques is necessary.
- Familiarity with image measurement and analysis tools is necessary.
Outputs:
In the first instance, we want to understand if it is possible to correct perspective from an image. If yes, are you able to both correct the perspective and then provide leg length estimates either in CM or as a % of total body height (we will show exactly where to measure) if we provide the user body height in CM.
Please see attached example of the kind of images we have (they are all different 'users') - the green line indicates the correct start and end points of "inside leg measurement" for clothing.
If you have the expertise and skills to handle this project with high accuracy, please get in touch. We have budget and would start with a test on 3 images before then commissioning a larger number (ca 25 different images). We can discuss cost per image once we know what is actually possible here.