Multi-modality image fusion method based on region and human eye contrast sensitivity characteristic

A technology of heterogeneous images and sensitive characteristics, applied in image enhancement, image data processing, instruments, etc., can solve problems such as inability to see objects clearly and reduce image quality.

Inactive Publication Date: 2012-11-28
NANJING UNIV
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Problems solved by technology

For example, low light, smog, etc. will reduce the image quality or even make it impossible to see the target clearly, while the image obtained by the millimeter wave radar has a strong penetrating ability for low lig

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  • Multi-modality image fusion method based on region and human eye contrast sensitivity characteristic
  • Multi-modality image fusion method based on region and human eye contrast sensitivity characteristic
  • Multi-modality image fusion method based on region and human eye contrast sensitivity characteristic

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Embodiment Construction

[0042] The heterogeneous image fusion method based on the area and contrast sensitivity of human eyes in the present invention includes the following steps: (1) The source images to be fused are respectively decomposed by non-subsampled Contourlet transform NSCT to obtain sub-bands of each order of the source images (2) According to the human visual contrast function LCSF, the human visual absolute contrast sensitivity function ACSF, the perceived brightness contrast function FBCF and the local average gradient sensitivity function LGSF, the low-frequency sub-band coefficients and high-frequency sub-band coefficients of all levels are respectively formulated Fusion rules to obtain sub-band coefficients at all levels of the fused image; (3) Perform NSCT inverse transformation on the fused coefficients to reconstruct the fused image. The specific implementation is as follows:

[0043] (1) The source image A and the source image B to be fused are respectively subjected to non-subs...

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Abstract

The invention provides a multi-modality image fusion method based on a region and human eye contrast sensitivity characteristic, comprising the following steps of: (1) respectively utilizing a non-subsampled Contourlet transform NSCT to carry out multi-scale decomposition on a source image to be fused to obtain each stage of sub-band coefficient of the source image; (2) respectively formulating a fusion rule of a low-frequency sub-band coefficient and each stage of high-frequency sub-band coefficient according to a human eye vision contrast function LCSF, a human eye vision absolute contrast sensitivity function ACSF, a feeling brightness contrast function FBCS and a local average gradient sensitivity function LGSF to obtain each grade of the sub-band coefficient of a fused image; and (3) carrying out NSCT inverted conversion on the fused coefficient and reconstructing to obtain the fused image. The multi-modality image fusion method disclosed by the invention meets vision properties of a human eye and improves the quality of the fused image to a great extent; and the multi-modality image fusion method has robustness, is suitable for fusing a plurality of types of image sources of infrared and visible light images, multi-focusing images, remote images and the like, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of fusion of heterogeneous images and videos, and in particular relates to the fusion of heterogeneous images based on non-subsampled Contourlet transform NSCT, which is mainly used for the fusion of heterogeneous images such as infrared images, visible light images, multi-focus images, and remote sensing images. A Heterogeneous Image Fusion Method Based on Region and Contrast Sensitivity Characteristics of Human Eye. Background technique [0002] With the rapid development of computer science and sensor technology, more and more sensors are applied in various fields. From a single visible light mode to a variety of sensor modes, various sensors have different imaging mechanisms, work in different wavelength ranges, and meet the needs of different working environments. In order to meet more practical applications, multi-sensor information fusion technology emerged as the times require. [0003] Heterogeneous image f...

Claims

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Application Information

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IPC IPC(8): G06T5/50
Inventor 李勃吴炜董蓉阮雅端王江蒋士正陈启美
Owner NANJING UNIV
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