Food waste assessment method and system based on image method

The invention discloses a food waste assessment method and system based on an image method, and belongs to the technical field of food waste assessment, and the method comprises the following steps: obtaining food residues in a dinner plate after dining of a dining person in a canteen is finished, taking the food residues as a sample, and photographing the sample; the food remaining condition in the picture is judged; when the projection coordinates are empty, loading the sample photo, respectively identifying and drawing edible parts and non-edible parts in the food by utilizing an editing tool, assigning each category, and calculating polygonal areas of the edible parts and the non-edible parts; counting the total area of edible parts and the total area of non-edible parts to obtain an average food waste index; the amount of kitchen waste is introduced, and the per capita food waste amount and the daily canteen waste amount are obtained. The food waste amount is obtained by combining the image method with t