A Digital Adjustment Method of Microlens Array Tilt in Light Field Camera

A technology of microlens array and light field camera, which is applied to the parts of color TV, parts of TV system, TV, etc., to achieve the effect of getting rid of the dependence on the operator's experience and realizing the effect of automatic adjustment

Active Publication Date: 2019-08-13
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: at present, when a microlens array is assembled in a light field camera, the artificial visual method is generally used to observe whether the spot sizes collected by the photosensitive chip are consistent to judge the difference between the microlens array and the photosensitive chip. Is the distance even

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  • A Digital Adjustment Method of Microlens Array Tilt in Light Field Camera

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Embodiment Construction

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, in combination with the methods involved in the present invention, a simplified model is used to introduce the principle of the automatic calibration method of light field cameras based on digital morphology, so as to further describe the present invention in detail illustrate.

[0022] The present invention is a digital adjustment method for the inclination of the microlens array in the light field camera. The image array of the light field camera is regarded as individual microlens sub-images, and the method of searching and measuring connected areas in the image morphology is used to automatically Search and measure the sub-image of the microlens, then calculate the number of pixels in the sub-image, obtain the spot size, and obtain the digital index of the tilt error of the microlens array, thereby judging whether there is a tilt error in the microlens array, and if ther...

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Abstract

The invention discloses a digital adjustment method for the inclination of a microlens array in a light field camera. The method firstly uses a light field camera to image a uniform white surface light source to generate a white image, and then uses the search and measurement method of connected regions in image morphology , process the light spots in different areas in the white image and calculate the average size of the light spots, judge whether the microlens array is tilted relative to the target surface of the imaging chip according to the size relationship of the spot sizes in different areas, and provide a digital index for the tilt error of the microlens array, Then adjust the microlens array according to this index, reduce or even eliminate the tilt error of the microlens array in the light field camera, reduce the difficulty of assembling the light field camera, and improve the imaging quality of the light field camera.

Description

technical field [0001] The invention relates to the adjustment of the microlens array of a light field camera, in particular to a digital adjustment method for the inclination of the microlens array in the light field camera. Background technique [0002] At present, light field cameras are widely favored by scientific researchers and consumers because of their uniqueness. Compared with traditional cameras, light field cameras simultaneously record the direction information and intensity information of light, hence the name light field cameras. From the perspective of imaging, the light field camera records the light field, so the light field camera can realize post-processing functions such as post-event focusing, multi-view extraction, and depth estimation. [0003] A light field camera mainly consists of three parts: a primary mirror, a microlens array, and a photosensitive chip. Among them, the microlens array is the core component of the light field camera. Tens of th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/225
CPCH04N23/54H04N23/55
Inventor 栾银森汤国茂许冰杨平何星王帅
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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