Bicolor medium wave infrared image fusion method
A fusion method and infrared image technology, which is applied in the field of two-color mid-wave infrared image fusion, can solve problems such as unsatisfactory fusion effects, achieve convenient and fast collection and fusion, improve effects, and facilitate hardware implementation
Inactive Publication Date: 2010-08-11
ZHONGBEI UNIV
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[0006] The invention solves the problem that the fusion effect of the existing two-color mid-wave infrared image fusion method is not ideal because the imaging of the first subdivided band is seriously affected by solar radiation, and the problem that it cannot be directly realized in the two-color mid-wave imager , providing a two-color mid-wave infrared image fusion method, the fusion method can remove the influence caused by more solar radiation and reflection in the imaging of the first subdivision band, and improve the image effect after fusion; at the same time, the fusion The method is simple and can be easily implemented in modules such as FPGA and DSP, which simplifies the hardware on which the method is based and can be easily embedded in a two-color medium-wave imager
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[0046] A two-color mid-wave infrared image fusion method, on the basis of dividing the infrared mid-wave into the first subdivision band and the second subdivision band (the first subdivision band is 3.4μm~4.1μm and the second subdivision band is 4.5μm ~5.3μm as an example), proceed as follows:
[0047] The first step is to segment the first subdivision band image to select a large saturated area:
[0048] 1. Smoothing the first subdivision band image by means of filtering to filter out noise;
[0049] 2. Use the formulas (1) and (2) to find the high and low threshold T h and T l , used for image binarization processing;
[0050] T h =αA max (1)
[0051] T l =μ+βσ (2)
[0052] where A max , μ and σ are the maximum value, mean value and standard deviation of the image pixel values in the first subdivision band, the coefficient α is the experimental value, and the value is between 0.85 and 0.95, and the coefficient β is the experimental value, and the value is bet...
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The invention relates to image fusion technology, in particular to a bicolor medium wave infrared image fusion method. The invention solves the problems that because the imaging of a first subdivided wave band in the existing bicolor medium wave infrared image fusion method is seriously influenced by solar radiation, the fusion effect is not ideal, and fusion can not be directly realized in a bicolor medium wave imager. By dividing infrared medium waves into a first subdivided wave band and a second subdivided wave band, the method comprises the following steps: segmenting the images of the first subdivided wave band to select saturation regions with large area; separating solar radiation saturation regions from non-solar radiation saturation regions; replacing fusion pixel values of the solar radiation saturation regions selected in the images of the first subdivided wave band; and fusing the processed images of the first subdivided wave band and the processed images of the second subdivided wave band by adopting a support value transform (SVT) method. The method is realized on an FPGA chip and a DSP chip or on a single FPGA chip and can be embedded into the bicolor medium wave imager.
Description
technical field [0001] The invention relates to image fusion technology, in particular to a two-color mid-wave infrared image fusion method. Background technique [0002] Due to the different transmittance and transmission characteristics of different bands in the atmospheric window, the different radiation characteristics of targets, and the performance differences of various sensors, infrared images of different bands have different advantages in describing target or scene information. The fusion of multi-source images can improve the quality of the final image, which is a current research hotspot. Representative studies include the fusion of visible light images and infrared images, the fusion of long-wave and medium-wave images, and the fusion of medium-wave and medium-wave images. There are also some literatures that mention ultraviolet image research. There are not many specific technical contents of these researches related to the imaging research on the subdivided i...
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Inventor 杨风暴蔺素珍郝晋萍王肖霞
Owner ZHONGBEI UNIV