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March 22, 2018 22:28
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Using numpy scaling instead of openCV
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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 = np.array(np.asarray(im) * 0.249023, dtype = np.uint8) | |
bRGGB = np.copy(bf8) | |
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): | |
#replace IR data with nearest Green | |
bRGGB[x+1, y] = bf8[x+1,y] | |
#set IR data into new array | |
IR[x//2, y//2] = bf8[x, y+1] | |
BGRim = cv2.cvtColor(bRGGB, cv2.COLOR_BayerRG2BGR) | |
cv2.imwrite('rawscaled.pgm', bf8) | |
cv2.imwrite('RGB.ppm', BGRim) | |
cv2.imwrite('RGB.tiff', BGRim) | |
cv2.imwrite('IR.tiff', IR) |
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