Computation and image pickup type digital camera

Abstract

The invention provides a computation and image pickup type digital camera. A liquid crystal component is added to a light path of the digital cameral and a digital focusing processor is added to the back end of the digital camera. The crystal component is provided with a periodic pattern electrode. The digital focusing processor is used for carrying out Fourier transform on the space function of the periodic pattern electrode and the image function obtained by the computation and image pickup type digital camera, carrying out deconvolution algorithm for removing the space function of the periodic pattern electrode on the image function on the frequency domain to obtain an intrinsic image frequency domain function, carrying out inverse Fourier transform on the intrinsic image frequency domain function to obtain an intrinsic image function and confirming the focal lengths for focusing corresponding to points of the image function according to the intrinsic image function to realize fullfocusing. The computation and image pickup type digital camera employs the liquid crystal component and the digital focusing processor to realize full focusing. As the liquid crystal component technology and the liquid crystal component industry are mature, the liquid crystal component is easy to be produced at low cost.

Description

technical field [0001] The invention relates to a digital camera, in particular to a computational photography digital camera. Background technique [0002] At present, digital cameras mostly use motors to drive the lens to zoom and / or focus to obtain high-definition images. However, on the one hand, most of the motors have complex structures (for example, common voice coil motors include components such as voice coils, permanent magnets, and casings), which is not conducive to assembly, and their large volume is not conducive to the miniaturization of digital cameras. On the other hand, when shooting close-ups, the depth of field of the lens is small, and often only a single point of focus can be achieved, and the overall clarity of the image is not ideal. [0003] For this reason, the industry proposes a computational imaging digital camera, which adds special optical elements, such as coded aperture, mask, and wavefront optical element, to the imaging optical path to cap...

AI Technical Summary

Problems solved by technology

[0004] However, the manufacturing process requirements of special optical components are very high, and the manufacturing cost is high

In addition, adding a coded aperture or mask to the light path will cause light loss, resulting in insufficient image brightness

However, if a wavefront film is added to the optical path of a digital camera, the calculation of the back-end digital focus processing is very large.

Images