| #!/usr/bin/python | |
| # Usage: python pic2bin.py input_png output_bin | |
| # e.g. python pic2bin.py 1920x1080.png pic.bin | |
| import os, sys, cv2 | |
| import numpy as np | |
| def down(img, maxpix): | |
| img = img / img.max() * maxpix | |
| return np.round(img).astype(np.uint8) | |
| filename = sys.argv[-2] #'1920x1080.png' | |
| output = sys.argv[-1] #'pic.bin' | |
| img = cv2.imread(filename) | |
| h, w = img.shape[:2] | |
| if 3 * w > 4 * h: # crop w | |
| w_ = 4 * h // 3 | |
| pad = (w - w_) // 2 | |
| img = img[:, pad:-pad] | |
| else: # crop h | |
| h_ = 3 * w // 4 | |
| pad = (h - h_) // 2 | |
| img = img[pad:-pad] | |
| img = cv2.resize(img, (800, 600)) | |
| b = down(img[..., 0], 3) | |
| g = down(img[..., 1], 7) | |
| r = down(img[..., 2], 7) | |
| with open(output, 'wb') as f: | |
| for i in range(img.shape[0]): | |
| for j in range(img.shape[1]): | |
| pix = ((b[i,j]<<6)|(g[i,j]<<3)|r[i,j]) | |
| f.write(pix.astype(np.uint8)) | |