Method and device for background removal and synthesis of image

Abstract

The invention discloses a method and device for background removal and synthesis of an image. Image processing in the method provided by the embodiment of the invention includes the steps of adopting a stripe curtain as a background to perform image or video shooting during background removal and synthesis of an image; utilizing a digital image morphological processing method to obtain background region information; performing smoothing processing on edges of foreground and background regions; utilizing an alpha superposition coefficient to remove the background, and performing alpha superposition on a foreground image and an image to be synthesized at the same time, thereby obtaining a final composite image. The method for background removal and synthesis of the image utilizes the stripe curtain instead of a traditional monochrome (such as green and blue) curtain as a matting background, avoids the problems in the prior art that during video editing and segmentation, matting loses a specific color, a color shift of the image occurs and the offline calibration efficiency is low, real-time removal of the background can be well realized, any color can be used in the foreground, and accuracy of color detection is improved.

Description

Image background removal and synthesis method and device technical field The present invention relates to the technical field of image processing, in particular to an image background removal and synthesis method and device. Background technique With the increasing application of special effects in film and television production, the use of specific background curtains and background removal and compositing techniques are also widely used in pre-shooting and post-production. At the same time, in machine vision, when detecting the color of an object, it is also necessary to effectively remove the background and its color to avoid affecting the measurement. Image background removal and synthesis technology studies the problem of separating the foreground information and background information in an image or video, and removing or replacing the separated background with another background. It is a class of classic digital image processing and digital image editing problems w...

AI Technical Summary

Problems solved by technology

The present invention provides a method and device for image background removal and synthesis, which are used to solve the problem of loss of specific color

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