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Method and device for generating hdri

An algorithm and equation technology, applied in the field of HDRI generation methods and devices, can solve problems such as loss of details in HDRI, and achieve the effect of avoiding loss of details

Inactive Publication Date: 2017-03-22
SZ DJI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method and device for generating HDRI, aiming to solve the problem of loss of details in HDRI caused by the existing HDRI generation method

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  • Method and device for generating hdri
  • Method and device for generating hdri
  • Method and device for generating hdri

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Embodiment Construction

[0068] The HDRI generation method and device provided by the embodiments of the present invention have an inventive idea of ​​only compressing the dynamic range of the basic layer of the illuminance image, but not compressing the dynamic range of the detail layer, so as to achieve the purpose of preserving the details in the image .

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0070] The embodiment of the present invention discloses a method for generating HDRI, comprising the following steps:

[0071...

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Abstract

In the method and device provided by the embodiment of the present invention, after obtaining the first illumination map, a second illumination map is generated from the first illumination map. The second illumination map is formed by merging the basic layer and the detail layer with the dynamic range compressed. Basically The layer and the detail layer are extracted from the first illumination map, and then the second illumination map is mapped to the preset color channel, and the images on the color channel are merged into HDRI. It can be seen that after generating In the process of HDRI, only the dynamic range of the basic layer in the illumination map is compressed, while the detail layer is not compressed. Therefore, the detailed information in the original illumination map can be retained to the greatest extent, thereby avoiding the distortion caused during the HDRI generation process. The problem of loss of detail.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method and device for generating HDRI. Background technique [0002] A high dynamic range image (High Dynamic Range Image, HDRI) has a wider dynamic range, and the dynamic range that the existing ordinary display devices can display is much smaller than that of HDRI. Therefore, in order to enable HDRI to display in ordinary It is shown on the device that when generating HDRI, it is necessary to compress the dynamic range of HDRI. [0003] However, the existing HDRI generation method will cause the loss of details in the HDRI. Contents of the invention [0004] In view of this, embodiments of the present invention provide a method and device for generating HDRI, aiming to solve the problem of loss of details in HDRI caused by the existing HDRI generation method. [0005] In order to achieve the above object, the embodiment of the present invention provides the following techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64H04N9/69H04N5/243H04N23/76
Inventor 蒋才高曹子晟王铭钰梁泰文
Owner SZ DJI TECH CO LTD
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