Rendering method and system for focusing light field camera

Abstract

The invention discloses a rendering method and system of a focused light field camera, the method comprising: S1. Inputting a picture taken by a focused light field camera, and recording the position information and center position of each microlens and sub-aperture image; S2. Calculate its depth of field according to the plane image that needs to be refocused, and determine the size of the radius R according to the depth of field; S3. At the center of each sub-aperture map, take a regular hexagonal block with a radius of R; S4. Make the regular hexagonal The region blocks are tiled and merged according to the order of the sub-aperture images to obtain a merged image; S4. Processing the merged image to obtain a final rendered image. This method takes advantage of the hexagonal arrangement characteristics of the microlens array, and takes regular hexagonal blocks for the microlens sub-aperture diagram. In the rendering process, it does not need to transform the coordinate system, which can effectively reduce the rendering of the focused light field camera. The calculation amount of the method.

Description

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

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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