Bubble Image Database
Collection of the Bubble images: Bubbles were generated inside the column and bubble images were taken with a bubble viewer. All images were manually classified into five classes according to the gas dispersion states. # Class 1: Fine bubbles fully covering the viewing window # Class 2: Fine bubbles partially covering the viewing window # Class 3: Co-exit of coarse and fine bubbles # Class 4: Only coarse bubbles # Class 5: No bubbles Training set contains in total 5184 original images and 25920 augumented images. Test set contains 582 original images.