There are few similarities between the two. Integrity means the person has highly honest and loyal standards within themselves and the only similarity between integrity and image is your honest and loyal qualities ARE YOUR IMAGE! You've built up character or a name for yourself in business and others trust you.
People can have an image and play 'the game' of being nice to people's faces, but end up back stabbers or worse. They can cheat in business or cheat on their mates. Hollywood use to be called, 'Image Makers' and take what they would call a 'nobody' and make them into a star. This doesn't mean the person is of good character because they are famous and although they may enjoy their fame for several years unless they are well balanced in their life and know right from wrong then they'll pay the price when their star starts to flicker out.
Mind, body and soul is very important and this leads to integrity (a high point in my life) and that's the image you portray and you can't fool most people out there so some people should get it right the first time around.