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Apparatus and method for image processing

A device and image technology, applied in image data processing, image enhancement, image communication, etc., can solve the problems of artifacts at seams, user experience differences, etc., and achieve the effect of reducing afterimages

Active Publication Date: 2012-12-12
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When blending multiple images before tone correction between the multiple images, because the multiple images may be obtained under different conditions such as different exposure values, different gray scales, and different lens shades , so artifacts can appear at the seams connecting the multiple images, which can cause the user to perceive a difference

Method used

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  • Apparatus and method for image processing

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Embodiment Construction

[0038] Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings, wherein like numerals refer to like parts throughout. The embodiments are described below in order to explain the present disclosure by referring to the figures.

[0039] Figure 1A and Figure 1B An example of a panoramic image according to the related art is shown.

[0040] Figure 1A shows a panoramic image obtained by matching two images without tone correction, Figure 1B A panoramic image obtained by estimating the optimal seam and matching the two images without tone correction is shown.

[0041] Even if two images obtained by photographing the same subject correspond to the same subject, overlapping regions of the two images have different exposure values ​​or different gradation levels for each image. So when blending each image without tone correction, as in Figure 1A and Figure 1B As shown, unnatural lines appear in the middle of t...

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Abstract

Apparatus and method for correcting a tone of a panoramic image. An image processing apparatus may acquire, from an overlapping region of a left image and a right image, ghost information based on an optimal threshold and a cost map in which a similarity between the left image and the right image is reflected, may generate a tone correction map based on a global tone correction function generated using the ghost information in the overlapping region, and based on a local tone correction level generated using local information of an optimal seam, and may correct the left image and the right image using a final tone correction map generated by applying, to the tone correction map, a weighting based on the left image and a weighting based on the right image.

Description

[0001] This application claims the benefit of priority of Korean Patent Application No. 10-2011-0055985 filed with the Korean Intellectual Property Office on Jun. 10, 2011, the disclosure of which is hereby incorporated by reference. technical field [0002] Exemplary embodiments described below relate to an apparatus and method for correcting a tone of a panoramic image, and more particularly, to an apparatus and method for performing tone correction before mixing a plurality of images to generate a panoramic image. Background technique [0003] A panoramic image may be generated by mixing multiple images obtained by photographing a subject at multiple positions or from multiple angles. When blending multiple images before tone correction between the multiple images, because the multiple images may be obtained under different conditions such as different exposure values, different gray scales, and different lens shades , so artifacts may appear at the seams connecting the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T3/4038H04N5/262G06F18/00G06T5/94G06T5/92G06T5/70
Inventor 车俊赫文永秀全映宣李时和
Owner SAMSUNG ELECTRONICS CO LTD
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