I want to capture a specific ROI (say 20x1800 region) of raspberry pi camera. First, I used the raspistill --roi. It gave me a zoomed image. The same happend with picamera crop method. So I decided to capture the whole image by raspicam and then using OpenCV to crop the image. It gave me a 20-27 frames per second. Isn't there any faster solution?
How can I capture a specific ROI of raspberry pi camera?
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