< > BotCompany Repo | #1019784 // bwIntegralImage_sumBorder - add pixels in a "border" (rectangle) of certain line width/height

JavaX fragment (include)

// x1/y1/x2/y2 are dimensions of the inner (empty) part of the rectangle
// w/h = line width/height
static int bwIntegralImage_sumBorder(BWIntegralImage img, int x1, int y1, int x2, int y2, int w, int h) {
  ret
    bwIntegralImage_sumRect(x1-w, y1-h, x2+w, y2+h)
    -bwIntegralImage_sumRect(x1, y1, x2, y2);
}

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