how can I adapt the distance on images with different size?
2 次查看(过去 30 天)
显示 更早的评论
if we have an image with size (860x440) the distance measure is 47mm. What is the same distance if the size of image is changed to (140x110).
0 个评论
回答(1 个)
Image Analyst
2021-9-7
Depends if the image was resized to have the same scene, or if you cropped out a portion of it.
If you cropped, the mm per pixel will be the same.
If you resized the whole image so that the scene is the same scene just in fewer pixels, then the mm per pixel will increase.
2 个评论
Image Analyst
2021-9-11
If the "distance measure" is the horizontal distance across the whole image and it's 47 mm then your original calibration is
originalMmPerPixel = 47 / 440
once you resize it so that it's only 110 pixels across (instead of 440 across) then the new calibration will be
newMmPerPixel = 47 / 110
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!