Rendering method and system of focusing type light field camera

Abstract

The invention discloses a rendering method and a system of a focusing type light field camera. The method comprises steps of: S1, inputting pictures shot by a focusing type light field camera and recording position information and center information of each micro-lens and each subaperture graph; S2, according to a plane image needing to be re-focused, calculating the depth of filed thereof, and according to the depth of field, determining the size of the radius R; S3, in the center position of each subaperture graph, taking a regular hexagon region block with the radius R; S4, laying and combining the regular hexagon region blocks according to the sequence of the subaperture graphs so as to obtain a combined graph; S5, processing the combined graph so as to obtain the final rendering graph. According to the invention, by taking advantages of hexagonal arrangement features of a micro-lens array, and taking the regular hexagon region blocks of the subaperture graphs of the micro-lenses, in the rendering process, the calculated amount of the rendering method of the focusing type light field camera can be effectively reduced without conversion of a coordinate system.

Description

Technical field [0001] The invention belongs to the technical field of rendering of a light field camera, and particularly relates to a rendering method and system of a focused light field camera. Background technique [0002] A light field camera is a device that can record light direction and position information. Compared with a traditional camera, it has an additional microlens array in structure. The process of using this device to obtain an image is light field imaging. As a new direction in imaging technology, light field imaging can achieve refocusing without mechanical focusing after shooting, but by image processing calculations to achieve refocusing, and can achieve 3D reconstruction and multi-target focusing. These characteristics make it There will be a lot of room for development in future life. [0003] The light field camera can simultaneously capture the space (or position) and direction (or angle) information of the scene, that is, the four-dimensional informatio...

AI Technical Summary

Problems solved by technology

[0005] In the traditional rendering method, the shape of the area block is square, and the microlens array of the focusing light field camera is usually arranged in a regular hexagon, so in the rendering process, it is necessary to go through a regular hexagonal coordinate system The conversion to the orthogonal coordinate system requires a large amount of calculation for the rendering method, which affects the rendering rate

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