As a learner of Chinese as a second language (my first language is English although I am a Chinese), I have been searching for a free translation tool that translates from Chinese to English and back and supports audio and image recognition. I found it in the Baidu Translation App.
The Baidu Translation App translates images in 4 ways. They are:
Simply swipe your fingers across to move from Word, Snapshot, Screen or Object Translation.
This is how they work.