According to the above problems need to be eliminated according to the following steps:
1. Whether the number of pixels in the hardware aperture meets the need to change the number of multi-angle selection, and select multiple angles according to the number of pixels that can be covered in the aperture;
The memory size of the whiteboard varies according to camera models. In the following figure, VA2/VE3/VE4 and VA6/VE5 are shown from top to bottom. The memory size is slightly compressed, and the actual gap is 1 to 2 MB.
3. Whether the white board photographed is uniform or symmetrical distortion, the following figure shows normal, distorted and uneven from left to right;
4. The white board photographed has an obvious state of shooting the object (the white paper is in focus in the image);
5. Uneven lighting
2, 3, and 4 above need to follow the steps to re-shoot the whiteboard.