A stereoscopic display depth adjustment method and device based on multi-band decomposition

Abstract

The embodiment of the invention discloses a three-dimensional display depth adjusting method and device based on multi-frequency decomposition. The method comprises following steps of determining a target image with a to-be-adjusted depth; obtaining a Gaussian pyramid corresponding to the target image based on a Gaussian filter function, wherein the Gaussian pyramid is composed of space frequency bands with different depths; obtaining frequency bands specific to a logarithm domain according to the space frequency bands in the Gaussian pyramid through a frequency band difference function; obtaining backup 3D display images according to the logarithm domain frequency bands through a reduced low frequency function; obtaining a to-be-displayed 3D display image with the adjusted depth based on the backup 3D display images and a difference value function, and finishing depth adjustment. Through application of the embodiment of the invention, targeted adjustment is carried out to the different depth values; and changes of depths can be perceived.

Description

technical field [0001] The invention relates to the field of depth adjustment of 3D display images, in particular to a method and device for adjusting depth of stereoscopic display based on multi-band decomposition. Background technique [0002] The display depth of field (Depth of field) is an important characteristic of an autostereoscopic 3D display, and the resolution of 3D content whose display depth exceeds the display depth of field will be reduced. Autostereoscopic displays with different parameters have different display depths of field. In order to make the most effective use of the display depth of field bandwidth of the display, the display depth of 3D content needs to be adjusted. The multi-viewpoint content required for autostereoscopic display can be obtained from a viewpoint map and its corresponding depth map or disparity map through the method of rendering based on depth map or disparity map (DIBR). The depth map determines the display of corresponding deta...

AI Technical Summary

Problems solved by technology

The first method multiplies the depth map by a global coefficient and adjusts it to the depth of field bandwidth, but this method will reduce the 3D depth as a whole, and the original areas that do not need to reduce the depth will also be reduced, resulting in the absolute value of the depth Small details cannot highlight the preservation of depth; the second method adjusts the depth value to the maximum value of the displayed depth of field for the part exceeding the displayed depth of field bandwidth, but when the displayed 3D depth is much larger than the displayed depth of field bandwidth, the result of this method will produce obvious results "Card effect", that is, the display depth of the excess part is the same, and details with a large absolute value of depth cannot be preferentially compressed, resulting in the inability to perceive the depth change of the excess part

The above two adjustment methods cannot make targeted adjustments to different depth values.

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