Using OCR, I want to extract text from product packages using Google Glass. However, because of the fixed focus of the camera the package pictures are blurred. Is there a way to sharpen the image? Currently I use unsharp masking to enlarge the gradients of the edges, which gives me OK results.
Is there a better way to do this? I thought about taking a picture of a point-spread-function and using this to deconvolve, but I doubt this gives me a good approximation of the distortion kernel.
Here is an example: