Panorama stitching method for removing moving object in moving video

A technology of moving objects and panoramas, applied in image data processing, graphics and image conversion, instruments, etc., can solve problems such as incomplete matching, incomplete elimination of moving objects, and inability to superimpose consistent backgrounds

Inactive Publication Date: 2015-11-11
GUIGE TECH BEIJING CO LTD
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  • Description
  • Claims
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Problems solved by technology

The synthesis of panoramas is prone to "ghosting", that is, there are multiple images of moving objects in the panorama, resulting in afterimages of moving objects at different times in the panorama, which affects the synthesis effect of the panorama
[0003] The cu

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  • Panorama stitching method for removing moving object in moving video
  • Panorama stitching method for removing moving object in moving video
  • Panorama stitching method for removing moving object in moving video

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[0054] The technical scheme of the present invention will be further explained below in conjunction with the drawings.

[0055] Such as figure 2 The flow chart of the method of the present invention is shown. A panoramic image stitching method for removing moving objects in a moving video, characterized in that the method includes the following steps:

[0056] (1) Obtain an appropriate number of video screenshots according to the length of the video;

[0057] (2) Since people are usually in the shooting habit of rotating the camera to obtain panoramic video without moving their body, it is necessary to map the image obtained from the screenshot to the spherical surface to prevent the final panoramic image from being distorted;

[0058] (3) Perform SURF feature point detection on each frame of image, and obtain the descriptor vector of the feature point as the basis for matching;

[0059] (4) Feature point matching;

[0060] (5) Calculate the perspective homography transformation matri...

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Abstract

The invention relates to a panorama stitching method for removing a moving object in a moving video, comprising the following steps: (1) acquiring an appropriate number of video screenshots according to the length of a video, wherein the screenshot selection interval is shorter is the video is shorter, and the screenshot selection interval is longer if the video is longer; (2) projecting an original image to a sphere in order to prevent a final panorama from distortion and deformation; (3) carrying out SURF feature point detection on each frame of image to obtain a feature point description sub vector as the basis of matching; (4) carrying out feature point matching; (5) calculating a perspective (homographic) transformation matrix of every two frames of images based on matching feature points, and calculating forward and reverse homographic matrix transformation of two adjacent frames; (6) obtaining the size of the panorama based on the homographic transformation matrix of adjacent frames; and (7) inversely mapping the panorama to a sequence frame, building a candidate point list for each pixel point of the panorama, and removing a moving object, thus, completing generation of the panorama. The resolution of panorama generation is high, background overlay is accurate, and the 'ghost' phenomenon of the moving object is avoided.

Description

technical field [0001] The invention belongs to the field of video image processing, in particular to a panorama splicing method for removing moving objects in moving videos. Background technique [0002] Panorama stitching algorithm is one of the hot issues in image processing, no matter in academic field or engineering field. It has a large number of applications in various software, such as camera panorama synthesis and so on. The panorama is the scene that the observer can see from a fixed point of view, and it needs to express the complete real environment information. The synthesis of panoramas is prone to "ghosting", that is, there are multiple images of moving objects in the panorama, resulting in afterimages of moving objects at different times in the panorama, which affects the synthesis effect of the panorama. [0003] The current various algorithms still have defects, such as slow panorama synthesis, and tens of seconds of synthesis time for a 5-second video; ...

Claims

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Application Information

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IPC IPC(8): G06T3/40
CPCG06T3/4038
Inventor 杨光周恒郭宗义
Owner GUIGE TECH BEIJING CO LTD
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