reading images from a see3cam CU40

see3cam_test.py

import math
import numpy as np
import cv2

cam = cv2.VideoCapture(0)

cam.set(cv2.CAP_PROP_FRAME_WIDTH, 1280)
cam.set(cv2.CAP_PROP_FRAME_HEIGHT, 720)
cam.set(cv2.CAP_PROP_CONVERT_RGB, False) # turn off RGB conversion
# cam.set(cv2.CAP_PROP_FOURCC('Y', '1', '6', ''))

# get image
ret_val, im = cam.read()

# release camera
cam = cam.release()

# get dimensions of image for later processing
rows = im.shape[0]
cols = im.shape[1]
size = im.size

cv2.imwrite('raw.pgm', im)

# CU40 camera
# convert from 10 bit (1024 levels) to 8 bit (255) 255/104 = 0.249023
bf8 = cv2.convertScaleAbs(im, 0.249023)

bRGGB = np.copy(bf8)

scale = math.sqrt(2)
dimx = int(rows/scale)
dimy = int(cols/scale)

IR = np.zeros([rows//2, cols//2], np.uint8)
IRbig = np.zeros([dimx, dimy], np.uint8)

for x in range(0, rows, 2):
	for y in range(0, cols, 2):
		#set IR data with nearest Green
		bRGGB[x+1, y] = im[x, y+1]
		#set IR data into new array
		IRbig[int(x/scale), int(y/scale)] = im[x+1,y]
		IR[x//2, y//2] = im[x+1,y]
		

BGRim = cv2.cvtColor(bRGGB, cv2.COLOR_BayerRG2BGR)

cv2.imwrite('rawscaled.pgm', im)
cv2.imwrite('RGB.ppm', BGRim)
cv2.imwrite('RGB.tiff', BGRim)
cv2.imwrite('IR.tiff', IR)
cv2.imwrite('IRbig.tif', IRbig)