Video encryption method and decryption method based on multi-projector splicing and fusion

Abstract

The invention belongs to the field of video encryption, particularly relates to a film encryption method and a film decryption method based on multi-projector splicing fusion, and aims at providing afilm source encryption and decryption technology for solving a problem of movie copyright protection. The method comprises the following steps of (1) carrying out parameterized division on a projection curtain, and selecting an encryption area; (2) generating a password on a target machine by using encryption software; (3) converting the password into a binary number, and selecting the front n bits of the binary number to generate a film encryption mask; (4) overlapping a watermark mask to generate an encrypted film in a process of rendering the generated film; (5) during a playing step, calling the same encryption program, generating a password which is the same as the encryption, converting the password into a binary array, and generating a splicing fusion decryption configuration parameter; and (6) calling the decryption configuration parameter by splicing fusion software and playing the encrypted film source in order to realize decrypted playing. According to the film encryption method and the film decryption method based on the multi-projector splicing fusion, an encryption technology for a multi-projector special curtain splicing fusion film is realized.

Description

technical field [0001] The invention belongs to the field of video encryption, in particular to a video encryption method and decryption method based on multi-projector splicing and fusion. Background technique [0002] The curved multi-projector splicing and fusion special film represented by ring screen, spherical screen film, etc. is a special screen film with a large viewing angle that appeared in the early 20th century. For the filming of wide-angle films and the production of animated scenes, use an ultra-wide-angle fisheye lens or a combination of image multi-camera lenses. The curtain is annular or hemispherical, and the audience is surrounded by it. Because the image has a large viewing angle to the audience and is accompanied by surround sound, the audience feels immersive. Due to the huge screen of the ring screen and the dome screen, and the limited space for projector placement, a single projector cannot fill the entire screen. And because the display resolut...

AI Technical Summary

Problems solved by technology

At the same time, in the case of playing on other machines or venues, the correct decrypted playback result cannot be obtained due to the inconsistency between the generated decryption password and the encrypted password

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