能不能像取点阵那样呢？
16*16的点阵
每块有固定大小，根据每块的点阵找到他
http://www6.blog.163.com/article/-hhFh00GmwIK.html
Bmp.PixelFormat := pf8bit; Bmp.Width := 16; Bmp.Height := 16; for i := 0 to 15 do for j := 0 to 15 do begin if Canvas.Pixels[i * 10 + 5, j * 10 + 5] = FDotColor then Bmp.Canvas.Pixels[i, j] := clBlack else Bmp.Canvas.Pixels[i, j] := clWhite; end; // for J to do
