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- const
- DISPLAY_DELAY = 1000;
- var
- bmp := BitmapFromString(496, 76, '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');
- type
- TThreshMethod = (TM_Mean, TM_MinMax);
- procedure ImThresholdAdaptive(bmp: Integer; Alpha, Beta: Integer; Method: TThreshMethod; C:Integer);
- var
- W, H, x, y, i, cl, Color, IMin, IMax: Integer;
- Threshold, Counter: Integer;
- Temp: T2DIntegerArray;
- Tab: array[0..256] of Integer;
- begin
- if (Alpha > Beta) then
- begin
- X := Beta;
- Beta := Alpha;
- Alpha := X;
- end;
- GetBitmapSize(bmp, W, H);
- SetLength(Temp, (H + 2), (W + 2));
- Dec(W);
- Dec(H);
- Threshold := 0;
- case Method of
- TM_Mean:
- begin
- for y := 0 to H do
- begin
- Counter := 0;
- for x := 0 to W do
- begin
- cl := FastGetPixel(bmp, x, y);
- Color := Trunc((0.2126 * (cl and $FF)) +
- (0.7152 * ((cl shr 8) and $FF)) +
- (0.0722 * ((cl shr 16) and $FF)));
- Temp[(y + 1)][(x + 1)] := Color;
- Counter := (Counter + Color);
- end;
- Threshold := (Threshold + (Counter div W));
- end;
- if (C < 0) then
- Threshold := ((Threshold div H) - Abs(C))
- else
- Threshold := ((Threshold div H) + C);
- end;
- TM_MinMax:
- begin
- cl := FastGetPixel(bmp, 0, 0);
- IMin := Trunc((0.2126 * (cl and $FF)) +
- (0.7152 * ((cl shr 8) and $FF)) +
- (0.0722 * ((cl shr 16) and $FF)));
- IMax := IMin;
- for y := 0 to H do
- for x := 0 to W do
- begin
- cl := FastGetPixel(bmp, x, y);
- Color := Trunc((0.2126 * (cl and $FF)) +
- (0.7152 * ((cl shr 8) and $FF)) +
- (0.0722 * ((cl shr 16) and $FF)));
- Temp[(y + 1)][(x + 1)] := Color;
- if (Color < IMin) then
- IMin := Color
- else
- if (Color > IMax) then
- IMax := Color;
- end;
- if (C < 0) then
- Threshold := (((IMax + IMin) div 2) - Abs(C))
- else
- Threshold := (((IMax + IMin) div 2) + C);
- end;
- end;
- Threshold := Max(0, Min(Threshold, 255));
- for i := 0 to (Threshold - 1) do
- Tab[i] := Alpha;
- for i := Threshold to 255 do
- Tab[i] := Beta;
- for y := 1 to H do
- for x := 1 to W do
- FastSetPixel(bmp, (x - 1), (y - 1), Tab[Temp[y][x]]);
- end;
- procedure DebugBitmap(bmp: Integer);
- var
- w, h: Integer;
- begin
- GetBitmapSize(bmp, w, h);
- DisplayDebugImgWindow(w, h);
- DrawBitmapDebugImg(bmp);
- end;
- var
- w, h: integer;
- begin
- getBitmapSize(bmp, w, h);
- DebugBitmap(bmp);
- Wait(DISPLAY_DELAY);
- ImThresholdAdaptive(bmp, 0, 255, TM_Mean, 44);
- DebugBitmap(bmp);
- freeBitmap(bmp);
- end.
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