At this time, it appears that the first mobile application that performs visual concept classification 100 percent on the mobile phone is the Impala app (see Figure 1). Impala automatically creates a series of labeled folders (such as cats, cars, or beaches) and then places pictures from a mobile device’s image gallery into these folders to help the user locate pictures (see Figure 2). The Impala app is free for download from the Apple App and Google Play stores.
The Impala app’s image classification runs in real time. The classification actually takes place
while the user is pointing the camera at the scene to be photographed. On today’s modern mobile chips, three to four frames can be processed per second. The app instantly displays the image categories under which the photo to be captured will be placed (see Figure 3). This allows the user to easily locate the picture in the future.