scaledGrayImageFromBWIntegralImage (unoptimized backup) [1033674]

< > BotCompany Repo | #1033674 // scaledGrayImageFromBWIntegralImage (unoptimized backup)

JavaX fragment (include)

static BufferedImage scaledGrayImageFromBWIntegralImage(int w, BWIntegralImage img) {
  ret scaledGrayImageFromBWIntegralImage(img, w);
}

static BufferedImage scaledGrayImageFromBWIntegralImage(BWIntegralImage img, int w, int h default heightForWidth(img.w, img.h, w)) {
  int w1 = img.w, h1 = img.h;
  byte[] pixels = new[w*h];
  int i = 0;
  for y to h:
    for x to w: {
      // TODO: optimize
      int x1 = x*w1/w, x2 = max(x1+1, (x+1)*w1/w);
      int y1 = y*h1/h, y2 = max(y1+1, (y+1)*h1/h);
      int pixel = iround(img.getPixelAverage(x1, y1, x2, y2));
      pixels[i++] = clampToUByte(pixel;
    }
  ret newGrayBufferedImage(w, h, pixels);
}

Author comment

Began life as a copy of #1033440

Travelled to 3 computer(s): bhatertpkbcr, mowyntqkapby, mqqgnosmbjvj

Snippet ID:

#1033674

Snippet name:

scaledGrayImageFromBWIntegralImage (unoptimized backup)

Eternal ID of this version:

#1033674/1

Text MD5:

2168ae9695a2530b384b83f0d869a141

Author:

stefan

Category:

javax / imaging

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2021-12-26 18:33:16

Source code size:

670 bytes / 18 lines

Pitched / IR pitched:

No / No

Views / Downloads:

117 / 139

Referenced in:

[show references]

1	static BufferedImage scaledGrayImageFromBWIntegralImage(int w, BWIntegralImage img) {
2	ret scaledGrayImageFromBWIntegralImage(img, w);
3	}
4
5	static BufferedImage scaledGrayImageFromBWIntegralImage(BWIntegralImage img, int w, int h default heightForWidth(img.w, img.h, w)) {
6	int w1 = img.w, h1 = img.h;
7	byte[] pixels = new[w*h];
8	int i = 0;
9	for y to h:
10	for x to w: {
11	// TODO: optimize
12	int x1 = xw1/w, x2 = max(x1+1, (x+1)w1/w);
13	int y1 = yh1/h, y2 = max(y1+1, (y+1)h1/h);
14	int pixel = iround(img.getPixelAverage(x1, y1, x2, y2));
15	pixels[i++] = clampToUByte(pixel;
16	}
17	ret newGrayBufferedImage(w, h, pixels);
18	}