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Omni-focus photographing apparatus and method

A photographic device, full-focus technology, applied to TV, color TV parts, electrical components, etc., can solve the problems of loss, unfavorable analysis and processing, etc., and achieve the effect of increasing the depth of field

Active Publication Date: 2017-02-15
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in application scenarios such as security monitoring, microscopic observation, and rocker detection, an image with only some clear objects will lose a lot of information, which is very unfavorable for subsequent analysis and processing based on these images

Method used

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  • Omni-focus photographing apparatus and method
  • Omni-focus photographing apparatus and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] join figure 1 , this all-focus photography device, comprises a kind of all-focus photography device, comprises zoom camera (202), depth sensor (203) and camera control and image processor (201), is characterized in that: described camera control and image processing The device (201) is connected with a variable camera and a depth sensor (203); the depth sensor is used to obtain the depth information of the scene; the variable focus camera is used to change the focal length to obtain a multi-focus image of the scene; the image processor is used to analyze and process the output of the depth sensor Scene depth information, analyze the color image acquired by the zoom camera, drive the zoom camera to change the focal length to obtain multi-focus images and synthesize all-focus images.

Embodiment 2

[0023] Embodiment 2: This all-focus photography method adopts the above-mentioned device to operate, and it is characterized in that the steps are as follows:

[0024] (1) Obtaining the scene depth map: Depending on the specific embodiment, infrared speckle technology, structured light technology, binocular stereo vision and laser radar can be selected to obtain scene depth information;

[0025] (2) Depth map preprocessing: For possible invalid data in the depth map, improve the quality of the depth map through depth map preprocessing;

[0026] (3) Depth map and color map registration: by calibrating the depth sensor and color image sensor to obtain their internal parameters and relative positional relationship, register the depth map and color map;

[0027] (4) Depth map segmentation: Segment the preprocessed image through the image segmentation algorithm to obtain the position area of ​​different objects in the image in the scene;

[0028] (5) Obtain multi-focus images: obt...

Embodiment 3

[0031] refer to image 3 , The all-focus camera device is made up of an infrared transmitter (301), a zoom color camera (302), and an infrared camera (303). The infrared emitter (301) and the infrared camera (303) form a depth sensor, wherein the infrared emitter (301) projects random speckles into the space, and these speckles change patterns with different distances to mark the space. An infrared camera (303) records these speckles and matches them with pre-recorded spatial speckle patterns to obtain a spatial depth map. Typical depth sensors using this scheme are Microsoft's Kinect and ASUS's Xtion. Under this all-focus camera device, the all-focus camera method is realized through the following steps:

[0032] (1) Obtain a scene depth map (S101): obtain a scene depth map through a depth sensor composed of an infrared emitter (301) and an infrared camera (303).

[0033] (2) Depth map preprocessing (S102): Under the above-mentioned depth sensor solution, due to image fact...

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Abstract

The present invention relates to an omni-focus photographing apparatus and method. The omni-focus photographing apparatus comprises a depth sensor, a zoom camera, and a camera control and image processor. Firstly, the depth sensor acquires a depth image of a photographing scene, after registration of the depth image and a color image is completed, an area occupied by an object of the photographing scene in the image is determined through segmentation of the depth image; then, the zoom camera changes the focal length so as to acquire a clear image for each segmented area; and finally, a omni-focus image of the scene is synthesized. According to the omni-focus image photographing apparatus and method, the high-quality omni-focus image can be acquired in real time, so that the depth of field of the camera is greatly increased. The omni-focus photographing apparatus and method can be widely applied to fields such as professional photography, security monitoring, and aircraft photographing.

Description

technical field [0001] The invention relates to an all-focus photography device and method. [0002] technical background [0003] Nowadays, all kinds of cameras are widely used to record fragments of life, film and television production, security monitoring, astronomical observation, microscopic observation, etc., and become an indispensable part of people's life. Generally, when a camera generates a certain frame of image, it is always under a certain parameter such as focal length, aperture, shutter, etc., in which only the image of an object at a specific distance can really be on the focal plane of the camera and reflected on the image That is, certain objects in the image are always clearly imaged while other objects are more or less blurred. When the focal length of the camera is longer, the depth of field is shorter and non-focused objects tend to be blurred. When the focal length of the camera is shorter due to this Blurring of out-of-focus objects with a longer dep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N13/02H04N13/00
CPCH04N13/128H04N13/257H04N23/67H04N23/951
Inventor 刘航李恒宇程洪涛曹宁丁长权
Owner SHANGHAI UNIV
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