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Generation of depth map for an image

A technology of image depth and depth map, which is applied in image communication, image enhancement, image analysis, etc., can solve the problems of inapplicability, inferior quality, etc., and achieve the effect of improved generation and low computing resource requirements

Inactive Publication Date: 2009-09-23
KONINKLIJKE PHILIPS NV
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, these methods tend to be implemented only under restrictive conditions and produce poor-quality depth maps that are unsuitable for e.g. visualization tasks

Method used

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  • Generation of depth map for an image
  • Generation of depth map for an image
  • Generation of depth map for an image

Examples

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Embodiment Construction

[0053] figure 1 An example of an image processing unit according to some embodiments of the invention is shown.

[0054] The image processing unit comprises a first processing unit 101 arranged to generate a depth indication map of the image. The image may eg be a digital picture or an image of a video sequence. The depth indication map comprises depth information data of the image, and in particular may comprise relative depth information of different regions of the image.

[0055] The depth indication map may comprise information about estimated relative or absolute depths of different regions or picture elements (also called pixels) of the image. Likewise, the depth indication map may be a depth map with depth data for different pixels, the depth map indicating absolute depth or relative depth with respect to other pixels or objects. For example, the depth indication map may comprise a value for each pixel indicating a depth level to which the pixel belongs, taken from a...

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Abstract

An image processing unit comprises a first processing unit (101) which generates a depth indication map for an image. The depth indication map may be, for example, an image object separation mask or a predetermined depth profile or background depth map. A second processing unit (103) generates a modified depth indication map by filtering the depth indication map in response to image characteristics of the image. The image adaptive filtering may, for example, provide a more accurate separation mask and / or may modify the predetermined depth profile to reflect the specific image. A third processing unit (105) generates an image depth map for the image in response to the modified depth indication map. The image depth map comprises data representing a depth of at least one image region of the image. The invention leads to the generation of an improved depth map for an image.

Description

technical field [0001] The present invention relates to the generation of depth maps of images, and in particular, but not exclusively, to the generation of depth maps of digital images comprising backgrounds and salient image objects. Background technique [0002] In recent years, digitization of images has become increasingly important for storage, manipulation and distribution purposes. Furthermore, the digitization of images allows complex manipulation and processing that offers previously unavailable opportunities. For example, significant research has been initiated in recent years to provide algorithms for extracting depth information from images. Such depth information can provide three-dimensional (3D) information obtained from two-dimensional (2D) images. Such 3D information can be used in many applications and can eg aid in automatic annotation of images. As another example, 3D information may be used to generate enhanced images, such as full or partial 3D imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00H04N13/00
CPCG06T2207/20012G06T7/0051G06T7/50
Inventor F·博戈贝尔
Owner KONINKLIJKE PHILIPS NV
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