Blackboard Captor

This is an android application with which you can select pictures from your album, or take a picture of the blackboard through the users’s camera. It will recognize the blackboard (rectangles) in the photo, crop out the extra image, correct it, optimize it, and save it in the user’s mobile phone. At the same time, we also provide replacement of the background color, which helps users to obtain better results.

How to use it

demo.mp4

Take Photo

1. Launch the Application
2. Click "TAKE PHOTO" bottom
3. Grant camera and storage permission if necessary
4. Take photo of blackboard
5. Result will be stored in user's albums

Select Image From Albums

1. Launch the Application
2. Click "SELECT PHOTO" bottom
3. Grant storage permission if necessary
4. Choose the photo photo of blackboard
5. Result will be stored in user's albums

Choose Image Style

1. Launch the Application
2. Click the menu bar
3. Select your favourite style
4. Take or select photo

Image Processing Procedures

Third-party Libraries

OpenCV: Open Source Computer Vision Library.