1. First, draw the frame of the glasses. Draw two ellipses to represent the frame of glasses. The shape of the frame can be slightly wider to accommodate eyes and electronic components.
2. Next, draw the lenses of the glasses. Draw two smaller ellipses in the frame to represent the lenses of glasses. You can choose to add some luster effects to the lens to make it look like real glasses.
3. Draw a small display screen above the glasses frame. You can draw a rectangular or square screen to represent the display on glasses. You can add some icons or words on the screen to show the food recognition function.
4. Draw two small electronic components on both sides of the glasses. You can draw some small buttons, sensors or cameras to show the functions and techniques of glasses.
Finally, add some details and shadows to the glasses. You can use a pencil or brush to add some details, such as patterns or textures on glasses frames. At the same time, add some shadows to each part of the glasses to increase the sense of reality and three-dimensional sense.
Remember, when drawing food identification glasses, we should pay attention to the use of details and shadows, and express the sense of technology and functionality. I hope these steps can help you!