Here is MHO: Machine learning may work tracking faces, balls or household objects, but food looks so different that I imagine an accurate program that could do

Here is MHO: Machine learning may work tracking faces, balls or household objects, but food looks so different that I imagine an accurate program that could do this is many decades into the future. Think about how many ways that you can cook lentils! How could you possibly tell the calorie content of curry? Perhaps someone could develope an application for fruit, but it's accuracy is probably going to be no better than looking up the average energy content of an apple on a table.