How do I... change the pixel of an image,not rezize imean to make more clarity by increase its pixel ratio, will any good software 4 it...
Adding more pixels to an image can improve it's clarity as long as you don't overdo it by adding too many. You can't really improve the existing clarity all that much since the software has to "guess" what colour the extra pixels need to be. The proper way is to take the picture using more pixels to start with, but a small improvement is possible by adding more with imaging software. I only use Adobe Photoshop so that's all I can recommend.