In our implementation, we made sure the image processing steps are performed in the cloud, in order to remove the overhead of processing from the mobile device [8]. For computing the calorie value of the food, we proposed two different techniques, each
of which was running in the cloud too. For the first technique in [6,7], we utilized the user’s finger as a calibration reference for computing the size of food portions and their ensuing calorie amounts. The user had to place his finger near the food each time the photo was captured. For the second technique, we proposed an auto-calibration approach [8] that did not require the use of a reference object to calculate the food dimension and its ensuing calorie content.