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Method and device for measuring audiovisual parameters

A device and technology of parallax value, applied in television, data recording, image data processing, etc., can solve problems such as difficulty in objectively determining the 3D content of video streams

Inactive Publication Date: 2015-08-05
TEKTRONIX INT SALES GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Currently, it is difficult to objectively determine whether 3D content is present in a video stream, whether it looks natural, or whether it is encoded correctly

Method used

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  • Method and device for measuring audiovisual parameters
  • Method and device for measuring audiovisual parameters
  • Method and device for measuring audiovisual parameters

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Embodiment Construction

[0038] Embodiments of the present invention will now be described with reference to the drawings, in which the same or similar parts or steps have been given the same or similar reference numerals.

[0039] Edge detection on left and right eye frames

[0040] A first step of the method for analyzing the 3D depth of a stereoscopic video according to an embodiment of the present invention is to apply an edge detection filter to two input frames (left eye and right eye frames, respectively). Edge detection filters typically operate on the luminance components of the pixels that make up the image and are implemented by applying a separable convolution filter to the two input frames. There are various edge detection filters available suitable for this process, such as Sobel, Prewitt and Kirsch edge filters, in particular. The performance of each type of filter is likely to be image content dependent. That is, for example, one filter may be better at content with people and anim...

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Abstract

There is provided a method of measuring 3D depth of a stereoscopic image, comprising providing left and right eye input images, applying an edge extraction filter to each of the left and right eye input images, and determining 3D depth of the stereoscopic image using the edge extracted left and right eye images. There is also provided an apparatus for carrying out the method of measuring 3D depth of a stereoscopic image.

Description

technical field [0001] The present invention relates generally to audiovisual data stream testing, and in particular to a method and apparatus for measuring the degree of 3D visual depth in a stereoscopic video stream. Background technique [0002] Stereoscopic (ie, 3D) images and video work by presenting two separate and slightly different images to the left and right eye, respectively. The images are different because they will each simulate what a viewer of a particular scene would see from the left and right eyes, respectively, separated by about 10 cm. It is this change in viewing angle between the eyes that allows humans (and other forward-eyed animals, which are primarily carnivores) to perceive depth through what is known as parallax. [0003] Stereoscopic media only works if the left and right eyes view their respective images individually (ie the right eye cannot see any images of the left eye and vice versa) and simultaneously. [0004] There are many different ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00H04N13/00G11B15/60
CPCG06T2207/10021H04N13/0497H04N2013/0081G06T2207/30168G11B15/605G06T7/0075G06T2207/10012G06T2207/20092G06T2207/10016G06T7/0026G06T7/0002G06T7/32G06T7/593H04N13/398G06T7/13
Inventor A·卡塞雷斯M·诺尔曼
Owner TEKTRONIX INT SALES GMBH