i want an new image with one pixel differance

i hv lena image of [256 256 3]

now i hv to chnge one pixel .....in it

Answer 1

[Walter Roberson]

imread then make the change then imwrite.

However if the image is a JPEG file then changing just one pixel is not always possible . If you need specific pixel values to be stored then never use jpeg (but jpeg2 might be okay )