Acquisition method for high signal-to-noise ratio variable illumination and light field reuse

Abstract

The invention provides an acquisition method for high signal-to-noise ratio variable illumination and light field reuse. The acquisition method for high signal-to-noise ratio variable illumination and light field reuse includes the following steps: (1) conducting modeling to light field signals, a illumination component and sensor noise collection, (2) conducting reuse collection to the light fields with coherent code and the illumination by using a prototype system, (3) initializing the variable illumination and the light fields, and (4) keeping iterative separation of an illumination and light field component, the illumination component, and a noise component related to signals constant. The overlay data of the light fields and the illumination are collected at the same time with the usage of reuse method, and the data are separated according to the attribute differences of the light fields, the illumination and the noise, light field reconstruction efficiency of the variable illumination is improved, and high efficient and high signal-to-noise ratio collection can be achieved.

Description

technical field [0001] The invention relates to the technical field of computational photography, in particular to a method for multiplexed acquisition of variable light field with high signal-to-noise ratio. Background technique [0002] The acquisition and reconstruction of light field is one of the important research contents of computational photography. Generally, it is realized by camera array, CCD encoding, microlens array, encoding aperture and other methods under the condition of constant illumination. Among these schemes, the camera array requires complex geometric calibration and color calibration; CCD encoding requires calculation in the frequency domain; the realization of the microlens array significantly reduces the spatial resolution; and the realization of the coding aperture is relatively simple, which can be achieved through a simple matrix Inverse operation to reconstruct. [0003] Re-illumination is an important research content in graphics. There are m...

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Problems solved by technology

[0003] Re-illumination is an important research content in graphics. There are many ways to achieve it, but there is no method combined with light field acquisition. Therefore, to achieve light field reconstruction with variable illumination, light field acquisition and re-illumination need to be carried out separately. resulting in low efficiency

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