Light field image sensor, method and applications
A sensor and pixel technology, applied in the field of light field sensing and light field image detection, can solve the problems that are not suitable for the use of imager arrays
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[0175] Example 1: Refocusing and finding range using light field data
[0176] One way to constrain the above problem is to assume that s is the result of visual information at a certain depth of focus, and find a best estimate of how the image should look if the detected rays originate only from that plane. s can now describe a plane of scale X×Y, so that s has X×Y=N 2 yuan. Although the matrix A is actually smaller than the matrix r, so A is not a square matrix, but it is "wider", and its "width" is greater than its "height", so the problem is now over-defined. By using the pseudo inverse transform (A T A) -1 A T , this transformation is usually used in overconstrained systems to obtain the best fit to s given r. If the fit is reasonably good (as you can get by choosing the right focal plane), then this approach can achieve a good approximation of the actual object scene. More specifically, if the approximation of s is
[0177] s'=p inv (A)r
[0178] where p inv (A...
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