stichting
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1 changed files with 47 additions and 51 deletions
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@ -160,88 +160,80 @@ class StitchingScanner:
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self.log(f"Initialized mosaic: {frame.shape[1]}x{frame.shape[0]}")
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def _blend_horizontal_at_y(self, base: np.ndarray, strip: np.ndarray,
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blend_width: int, append_right: bool, x_offset: int = None,
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y_offset: int = 0) -> np.ndarray:
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blend_width: int, append_right: bool, x_offset: int = None,
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y_offset: int = 0) -> np.ndarray:
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h_base, w_base = base.shape[:2]
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h_strip, w_strip = strip.shape[:2]
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# Clamp y_offset
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y_offset = max(0, min(y_offset, h_base - h_strip))
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# Calculate y_offset based on mosaic growth (mirror of vertical's x_offset calculation)
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y_offset = max(0, h_base - self.state.mosaic_init_height)
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blend_w = min(blend_width, w_strip, w_base)
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# Create full-height strip with actual strip placed at y_offset
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full_strip = np.zeros((h_base, w_strip, 3), dtype=np.uint8)
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available_height = h_base - y_offset
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copy_height = min(h_strip, available_height)
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full_strip[y_offset:y_offset + copy_height, :] = strip[:copy_height, :]
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self.log(f"=== _blend_horizontal_at_y ===")
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self.log(f" base: {w_base}x{h_base}, strip: {w_strip}x{h_strip}")
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self.log(f" y_offset: {y_offset} (h_base - init_height = {h_base} - {self.state.mosaic_init_height})")
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self.log(f" full_strip: {full_strip.shape[1]}x{full_strip.shape[0]}")
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if append_right:
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# Expand mosaic to the right
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if blend_w <= 0 or blend_w >= w_strip:
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return np.hstack([base, full_strip])
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result_width = w_base + w_strip - blend_w
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result = np.zeros((h_base, result_width, 3), dtype=np.uint8)
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self.log(f"=== _blend_horizontal_at_y (append_right) ===")
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self.log(f" base: {w_base}x{h_base}, strip: {w_strip}x{h_strip}")
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self.log(f" y_offset: {y_offset}, blend_w: {blend_w}")
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self.log(f" result: {result_width}x{h_base}")
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# Step 1: Copy entire base
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result[:, :w_base] = base
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# Step 2: Copy non-overlap portion of strip at correct Y
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x_place = w_base
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self.log(f" Placing strip at X={w_base - blend_w}:{result_width}, Y={y_offset}:{y_offset + h_strip}")
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result[y_offset:y_offset + h_strip, w_base:] = strip[:, blend_w:]
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# Step 3: Create blend
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alpha = np.linspace(1, 0, blend_w, dtype=np.float32)[np.newaxis, :, np.newaxis]
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base_overlap = base[y_offset:y_offset + h_strip, -blend_w:].astype(np.float32)
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strip_overlap = strip[:, :blend_w].astype(np.float32)
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base_overlap = base[:, -blend_w:].astype(np.float32)
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strip_overlap = full_strip[:, :blend_w].astype(np.float32)
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blended = (base_overlap * alpha + strip_overlap * (1 - alpha)).astype(np.uint8)
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# Step 4: Place blend
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result[y_offset:y_offset + h_strip, w_base - blend_w:w_base] = blended
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result[:, w_base - blend_w:w_base] = blended
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result[:, w_base:] = full_strip[:, blend_w:]
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self.log(f" append_right: result {result_width}x{h_base}")
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return result
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else: # append_left - place at x_offset, NO width expansion
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# x_offset is where the LEFT edge of the strip should go
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if x_offset is None:
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x_offset = 0
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# Clamp x_offset to valid range
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x_offset = 0 - min(x_offset, w_base - blend_w)
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# Clamp x_offset to valid range
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x_offset = max(0, min(x_offset, w_base - w_strip))
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self.log(f"=== _blend_horizontal_at_y (append_left) ===")
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self.log(f" base: {w_base}x{h_base}, strip: {w_strip}x{h_strip}")
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self.log(f" x_offset: {x_offset}, y_offset: {y_offset}, blend_w: {blend_w}")
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self.log(f" append_left: x_offset={x_offset}")
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# Result is same size as base (no expansion when going left)
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result = base.copy()
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# Calculate placement bounds
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strip_x_start = x_offset
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strip_x_end = min(x_offset + w_strip, w_base)
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strip_cols_to_copy = strip_x_end - strip_x_start
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# Place full_strip at x_offset, blending on the RIGHT edge
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# Non-blend portion
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non_blend_width = w_strip - blend_w
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if non_blend_width > 0:
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result[:, x_offset:x_offset + non_blend_width] = full_strip[:, :non_blend_width]
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self.log(f" Placed non-blend at X={x_offset}:{x_offset + non_blend_width}")
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self.log(f" Placing strip at X={strip_x_start}:{strip_x_end}, Y={y_offset}:{y_offset + h_strip}")
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self.log(f" Strip cols to copy: {strip_cols_to_copy}")
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# Blend zone on the right edge of the strip
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blend_x_start = x_offset + non_blend_width
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blend_x_end = x_offset + w_strip
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# Step 1: Copy strip content (non-blend portion) at correct position
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# For LEFT scanning, blend is on the RIGHT side of the strip
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non_blend_end = strip_cols_to_copy - blend_w
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if non_blend_end > 0:
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result[y_offset:y_offset + h_strip, strip_x_start:strip_x_start + non_blend_end] = strip[:, :non_blend_end]
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self.log(f" Step 1: Placed non-blend at X={strip_x_start}:{strip_x_start + non_blend_end}")
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# Step 2: Create blend on the RIGHT edge of strip (blending with existing content)
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blend_x_start = strip_x_end - blend_w
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blend_x_end = strip_x_end
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if blend_w > 0 and blend_x_start >= strip_x_start:
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if blend_w > 0 and blend_x_end <= w_base:
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alpha = np.linspace(1, 0, blend_w, dtype=np.float32)[np.newaxis, :, np.newaxis]
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strip_overlap = strip[:, -blend_w:].astype(np.float32)
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base_overlap = base[y_offset:y_offset + h_strip, blend_x_start:blend_x_end].astype(np.float32)
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strip_overlap = full_strip[:, -blend_w:].astype(np.float32)
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base_overlap = base[:, blend_x_start:blend_x_end].astype(np.float32)
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blended = (strip_overlap * alpha + base_overlap * (1 - alpha)).astype(np.uint8)
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result[y_offset:y_offset + h_strip, blend_x_start:blend_x_end] = blended
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self.log(f" Step 2: Blend zone at X={blend_x_start}:{blend_x_end}")
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result[:, blend_x_start:blend_x_end] = blended
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self.log(f" Blend zone at X={blend_x_start}:{blend_x_end}")
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self.log(f" Final: Strip placed at X={strip_x_start}, Y={y_offset}, mosaic size unchanged: {w_base}x{h_base}")
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self.log(f" Final: strip at X={x_offset}, Y={y_offset} (via full_strip)")
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return result
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def _blend_horizontal(self, base: np.ndarray, strip: np.ndarray,
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@ -342,6 +334,8 @@ class StitchingScanner:
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result[h_strip - blend_h:h_strip, :] = blended
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result[h_strip:, :] = base[blend_h:, :]
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return result
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def _blend_vertical(self, base: np.ndarray, strip: np.ndarray,
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blend_height: int, append_below: bool) -> np.ndarray:
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mh, mw = base.shape[:2]
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@ -422,8 +416,10 @@ class StitchingScanner:
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else:
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strip_end = min(w, append_width + BLEND_WIDTH)
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new_strip = frame[:, :strip_end]
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x_offset = int(self.state.mosaic_width - abs(self.state.current_x) - new_strip.shape[1])
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x_offset = max(0, x_offset)
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self.mosaic = self._blend_horizontal_at_y(
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self.mosaic, new_strip, BLEND_WIDTH, append_right=False, x_offset=int(self.state.current_x), y_offset=y_offset)
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self.mosaic, new_strip, BLEND_WIDTH, append_right=False, x_offset=x_offset, y_offset=y_offset)
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self._displacement_since_append_x = fractional_remainder
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self._displacement_since_append_y = 0.0
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