diff options
Diffstat (limited to 'decoder.py')
| -rw-r--r-- | decoder.py | 31 |
1 files changed, 19 insertions, 12 deletions
@@ -2,6 +2,7 @@ import argparse import sys import traceback import cv2 +import matplotlib.pyplot as plt import numpy as np from creedsolo import RSCodec from raptorq import Decoder @@ -28,13 +29,19 @@ decoder = Decoder.with_defaults(args.size, rs_size) def find_corner(A, f): cx, cy = A.shape[:2] - # Resize so smaller dim is 5 - scale = min(cx // 5, cy // 5) + # Resize so smaller dim is 8 + scale = min(cx // 8, cy // 8) B = cv2.resize(A, (cy // scale, cx // scale), interpolation=cv2.INTER_AREA) - guess = np.array(np.unravel_index(np.argmax(f(B)), B.shape[:2])) * scale + scale // 2 - mask = cv2.floodFill(A, np.empty(0), tuple(reversed(guess)), 1, 10, 10, cv2.FLOODFILL_MASK_ONLY)[2][ - 1:-1, 1:-1 - ].astype(bool) + guess = np.array(np.unravel_index(np.argmax(f(B.astype(np.float64))), B.shape[:2])) * scale + scale // 2 + mask = cv2.floodFill( + A, + np.empty(0), + tuple(reversed(guess)), + 0, + (50, 50, 50), + (50, 50, 50), + cv2.FLOODFILL_MASK_ONLY + cv2.FLOODFILL_FIXED_RANGE, + )[2][1:-1, 1:-1].astype(bool) return np.average(np.where(mask), axis=1), np.average(A[mask], axis=0).astype(np.float64) @@ -54,8 +61,8 @@ while data is None: raw_frame = cv2.cvtColor(raw_frame, cv2.COLOR_BGR2RGB) X, Y = raw_frame.shape[:2] - cx, cy = X // 4, Y // 4 - widx, wcol = find_corner(raw_frame[:cx, :cy], lambda B: (np.std(B, axis=2) < 35) * np.sum(B, axis=2)) + cx, cy = X // 3, Y // 3 + widx, wcol = find_corner(raw_frame[:cx, :cy], lambda B: np.sum(B, axis=2) - np.std(B, axis=2)) ridx, rcol = find_corner(raw_frame[:cx, Y - cy :], lambda B: B[:, :, 0] - B[:, :, 1] - B[:, :, 2]) ridx[1] += Y - cy gidx, gcol = find_corner(raw_frame[X - cx :, :cy], lambda B: B[:, :, 1] - B[:, :, 2] - B[:, :, 0]) @@ -116,10 +123,10 @@ while data is None: ) ) frame = (frame[::2] << 4) + frame[1::2] - frame = np.pad(frame, (0, (len(frame) + 254) // 255 * 255 - len(frame))) - frame = np.ravel(frame.reshape(255, len(frame) // 255), "F")[: frame_size // 2] - erase_pos = list(np.where(frame == 0)[0]) if args.erasure else [] - data = decoder.decode(bytes(rsc.decode(frame ^ frame_xor, erase_pos=erase_pos)[0])) + # frame = np.pad(frame, (0, (len(frame) + 254) // 255 * 255 - len(frame))) + # frame = np.ravel(frame.reshape(255, len(frame) // 255), "F")[: frame_size // 2] + erase_pos = bytearray(np.where(frame == 0)[0]) if args.erasure else bytearray() + data = decoder.decode(bytes(rsc.decode(bytearray(frame ^ frame_xor), erase_pos=erase_pos)[0])) print("Decoded frame") except KeyboardInterrupt: sys.exit() |