this idea has been rinsed and repeated many times already. unless you're going to include manual input in addition to the image recognition, it will be highly inaccurate
Oh yeah, manual input is going to be a big part of it.
The system should ideally try to map the image to a standard recipe with the ingredients and then hand over control to the user to make any modifications they like.
Computing the nutrients from the ingredients should be reasonably accurate post this because that has a direct mapping in the USDA FoodCentral dataset.
