I am working on Color recognition, but my app response is very slow on iphone 4s/4. I checked the speed of code line by line and it take almost half when loop iterate 320*480 (width and height of image), but if we'll resize image (let say 100*100) then speed enhance, but i don't know at where i have to resize image so that its output will not be damage. So need your help to do this. Thanks in advance.
Resize image after getting from Camera.
Which SDK are you using? - the Unity extension or the native iOS SDK?
Take a look at our Background Texture Access sample. This demonstrates how to map the camera image to a texture, which you should be able to scale for your purposes.
Also you might be interested in the FastCV SDK by Qualcomm - https://developer.qualcomm.com/mobile-development/mobile-technologies/computer-vision-fastcv
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