Hole Filling Method Based on Image Sequence
A filling method and image sequence technology, applied in image communication, stereo systems, electrical components, etc., can solve the problems of high time complexity of iterative algorithm, which is not conducive to hardware implementation, etc., to reduce time complexity, improve authenticity, and save money. The effect of bandwidth
Inactive Publication Date: 2015-10-21
SICHUAN PANOVASIC TECH +1
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The time complexity of the iterative algorithm is high, which is not conducive to hardware implementation
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[0064] image 3 It is a schematic workflow diagram of the image sequence-based hole filling method of the present invention. Such as image 3 As shown, the hole filling method based on the image sequence of the present invention comprises the following steps:
[0065] S301: Calculate the disparity map:
[0066] According to the reference image R before and after the three-dimensional image transformation t and the target image D t , calculate the disparity vector of each corresponding pixel, and get the disparity map MV_D t R t .
[0067] This embodiment uses images in the "ballet" sequence and their accompanying calibration parameters. Reference Image The image captured by camera 4 in the "ballet" sequence was chosen as reference image (left view). Figure 4 are the reference image and the target image in this embodiment.
[0068] S302: For the target image D t Perform small hole preprocessing:
[0069] Figure 5 It is a schematic diagram of the workflow of small ...
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The invention discloses a cavity filling method based on an image sequence. A disparity map is obtained according to a reference image Rt and a target image Dt existing before and after three-dimensional image transformation, small cavity pre-processing is carried out on the target image Dt, an adjacent target image is generated according to a set of adjacent reference images in front of and behind the reference image Rt, the depth difference value of the adjacent target image and the target image Dt is calculated, usability marking is carried out on pixel points in the adjacent target image, usable pixel points are copied from the adjacent target image to carry out cavity filling on the target image Dt, then the adjacent reference images are used for carrying out cavity filling on the target image Dt in a movement compensation mode, a cavity filling method based on the disparity map is further carried out on a cavity smaller than a threshold value at the moment, then the next set of adjacent reference images is selected for filling, and finally filling of the rest of cavities is completed through an image inpainting algorithm. Only one path of video is needed, the good image quality can be achieved, the bandwidth needed by video data transmission is saved, and the time complexity for achieving hardware is reduced.
Description
technical field [0001] The invention belongs to the technical field of three-dimensional image transformation, and more specifically relates to a hole filling method based on image sequences. Background technique [0002] In a 3D television system, when a new view is generated using a depth image-based rendering technology (Depth Image Based Rendering, DIBR), large holes (holes) may be generated due to changes in viewpoints and other reasons. The hole problem is the main and hardest problem to solve, it seriously affects the quality of the new view. The problem of void filling has attracted the attention of many researchers, and correspondingly, there have been many solutions. According to their technical characteristics, they can be mainly divided into two categories: [0003] 1. Hole filling based on airspace. [0004] The more classic ones mainly include depth image preprocessing, image restoration, etc. Among them, the depth image preprocessing smoothes the depth ima...
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IPC IPC(8): H04N13/00
Inventor 刘然曹东华田逢春李博乐黄振伟邓泽坤贾瑞双徐苗谭迎春谭伟敏
Owner SICHUAN PANOVASIC TECH