Panoramic depth image acquisition method and device, panoramic depth image synthesis method and device, equipment and storage medium

An image acquisition and panorama technology, applied in image communication, TV, color TV components and other directions, can solve the problems of slow processing speed, large amount of image processing data, complex image acquisition process, etc., achieving a small number of images and overlapping depth of field. The effect of low intensity and simplified image acquisition process

Active Publication Date: 2021-07-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a panoramic depth image acquisition method, synthesis method, device, equipment and storage medium, which are used to solve the technical problems of complex image acquisition process, large amount of image processing data and slow processing speed in the existing panoramic depth image processing technology

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  • Panoramic depth image acquisition method and device, panoramic depth image synthesis method and device, equipment and storage medium
  • Panoramic depth image acquisition method and device, panoramic depth image synthesis method and device, equipment and storage medium
  • Panoramic depth image acquisition method and device, panoramic depth image synthesis method and device, equipment and storage medium

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Embodiment 1

[0053] The panoramic depth image acquisition method in this embodiment starts with the characteristics of the optical power value changing with time during the dynamic change process of the liquid crystal lens, and screens out the corresponding depth of field range according to the corresponding relationship between the optical power value and the depth of field range during the dynamic change process of the liquid crystal lens. The optical power value whose depth of field range can cover the entire imaging space is used as the target optical power value. Then find out the specific moment when the liquid crystal lens is at the target focal power value according to the characteristics of the power value changing with time, and finally collect a small amount of images at the specific time found above as the image for subsequent depth-of-field stitching. Since the image acquisition time in this embodiment is determined according to the depth-of-field requirement that the depth-of-...

Embodiment 2

[0115] This embodiment provides a method for synthesizing a depth-of-view image, in which a depth-of-field image is obtained by performing depth-of-field fusion processing on an image collected by using the method for collecting a depth-of-view image in Embodiment 1.

[0116] The depth of field fusion processing method here adopts the wavelet fusion algorithm, and of course other algorithms can also be used. The specific method is to perform wavelet decomposition on the collected original image according to the principle of wavelet transform, and perform one-dimensional filtering on all the rows and columns of the extracted sub-image. Compare the maximum value of the wavelet decomposition coefficient in a series of images, and perform wavelet reconstruction through inverse transformation to synthesize a full depth image. The specific process can be to first carry out N-level wavelet decomposition on each collected image to obtain its high-frequency sub-image and low-frequency ...

Embodiment 3

[0119] see Figure 6 , the present embodiment provides a full depth image acquisition device, the device includes:

[0120] A time characteristic acquisition module, the time characteristic acquisition module is used to acquire the characteristics of the focal power value changing with time during the dynamic change process of the variable focus lens unit;

[0121] A depth-of-field range acquisition module, the depth-of-field range acquisition module is used to acquire the depth-of-field range corresponding to the focal power value during the dynamic change process of the zoom lens unit;

[0122] A target optical power value acquisition module, the target optical power value acquisition module is used to acquire at least one set of optical power values ​​whose corresponding depth of field range can cover the entire imaging space according to the depth of field range corresponding to the optical power value As the target optical power value, the ratio of the overlapping part o...

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Abstract

The invention discloses a panoramic depth image acquisition method and device, a panoramic depth image synthesis method and device, equipment and a storage medium, and relates to the technical field of optical imaging. The acquisition method comprises the following steps: acquiring the characteristic that a focal power value changes along with time; acquiring a field depth range corresponding to the focal power value; obtaining a target focal power value; acquiring an acquisition moment for image acquisition; and collecting a target image. The image synthesis method comprises the step of performing depth-of-field fusion processing on an acquired image to obtain a full depth-of-field image. The device comprises a time characteristic acquisition module, a field depth range acquisition module, a target focal power value acquisition module, an acquisition time acquisition module and an image acquisition module. Computer program instructions are stored on the storage medium. According to the panoramic depth image acquisition method, synthesis method, device and equipment and the storage medium, the technical problems of complex image acquisition process, large image processing data volume and low processing speed of the existing image processing technology based on the variable-focus lens unit can be solved.

Description

technical field [0001] The present invention relates to the technical field of optical imaging, in particular to a method for collecting panoramic depth images, a synthesis method, a device, equipment and a storage medium. Background technique [0002] The Extended Depth of Field (EDOF) optical imaging system can obtain more abundant information of objects. In order to break through the depth-of-field limitation of traditional optical imaging systems, researchers have proposed many methods to expand the depth-of-field of optical systems. Among them, the method of expanding the depth of field can be divided into three categories: the first type is to realize the depth of field expansion by reducing the numerical aperture of the system; the second method is wavefront coding (Wavefront coding, WFC), which is recorded by phase modulation at the pupil position. Encoded images, and use digital image processing technology to decode the encoded images to achieve the effect of expan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/232
CPCH04N23/957H04N23/67H04N23/64H04N23/698
Inventor 叶茂马嘉成陈晓西
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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