# Revision history [back]

### modify pixel of image with 1

hi, i have a image i want to modify it each pixel whose value is 0 with 1. how can i do in andrid.

i have done the same in matlab.

code - image(image==0)=1;

how can i do the same in opencv android.

thanks

### modify pixel of image with 1

hi, i have a image i want to modify it each pixel whose of image having 0 value with 0.01. below is the code to replace the value 0 with 1. how can i do in andrid.

i have done the same in matlab.0.01. but it is not doing any thing.

code - image(image==0)=1;-

how can i do the same in opencv android.

for (int y=0; y<contrast.rows; y++)
{
for (int x=0; x<contrast.cols; x++)
{
if(contrast.at<uchar>(y, x) ==0)
contrast.at<uchar>(y, x) = 0.01;
}
}


thanks

### modify pixel of image with 10.01

hi, i have a image i want to modify it each pixel of image having 0 value with 0.01. below is the code to replace the value 0 with 0.01. but it is not doing any thing.

code -

for (int y=0; y<contrast.rows; y++)
{
for (int x=0; x<contrast.cols; x++)
{
if(contrast.at<uchar>(y, x) ==0)
contrast.at<uchar>(y, x) = 0.01;
}
}


thanks