下面的数码显微照片函数尝试通过获取图像行的子行中相邻像素的差异来创建图像。第一个像素被替换为由此创建的子行的差值结果的平均值。
例如,如果输入图像是 8 像素宽和 1 行高并且子行大小是 4 - In_img = {8,9,2,4,9,8,7,5} 那么输出图像将是 - Out_img = {均值(8,9,2,4)=5.75,9-8=1,2-9=-7,4-2=2,均值(9,8,7,5)=7.25,8-9= -1,7-8=-1,5-7=-2}
当我运行此脚本时,第一行的第一个像素是正确的,但其余像素不正确。当我将循环限制设置为只有一个子行和一个行即 x=1 和 y=1 时,脚本可以正常工作。
关于可能发生的事情或脚本可能有什么问题的任何想法?
// Function to compute the standard deviation (sigma n-1) of an image, or
// a set of values passed in as pixel values in an image. The
// number of data points (n) the mean and the sum are also returned.
// version:20080229
// D. R. G. Mitchell, adminnospam@dmscripting.com (remove the nospam to make this email address work)
// v1.0, February 2008
void StandardDeviation(image arrayimg, number &stddev, number &n, number &mean, number &sum)
{
mean=mean(arrayimg)
number xsize, ysize
getsize(arrayimg,xsize, ysize)
n=xsize*ysize
sum=sum(arrayimg)
image imgsquared=arrayimg*arrayimg
number sumofvalssqrd=sum(imgsquared)
stddev=sqrt(((n*sumofvalssqrd)-(sum*sum))/(n*(n-1)))
}
image getVectorImage(image refImage, number rowsize)
{
number fh, fv, fhx
getsize(refImage, fh, fv)
fhx=trunc(fh/rowsize)
//result("ByteSize of refimage = "+refImage.ImageGetDataElementByteSize()+"\n")
//create image to save std of each row of the ref image.
//The std values are saved as pixels of one row. The row size is same as number of rows.
//use fhx*rowsize for the new imagesize as fhx is truncated value.
image retImage:=RealImage("",4,fhx*rowsize,fv)
image workImage=slice1(refImage,rowsize+1,0,0,0,rowsize-1,1)
number stddev,nopix,mean,sum
for ( number y=0;y<fv;y++)
{
for (number x=0;x<fhx;x++)
{
//result ("x,y="+x+","+y+"; fhx="+fhx+"; rowsize="+rowsize+"\n")
workImage=slice1(refImage,x*rowsize+1,y,0,0,rowsize-1,1)-slice1(refImage,x*rowsize,y,0,0,rowsize-1,1)
showimage(workImage)
StandardDeviation(workImage,stddev,nopix,mean,sum )
retImage[y,x*rowsize+1,y+1,x*rowsize+rowsize]=workImage
retImage[y,x]=mean
result("mean @ row "+y+" = "+mean+"\n")
}
}
return retImage
}
showimage(getVectorImage(getfrontimage(),rowsize))