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The spatial fixed-pattern noise (FPN) compromises severely the quality of the acquired imagery, even makes such images inappropriate for some applications. In order to lower the FPN, some critical nonuniformity correction (NUC) algorithms such as NUC based on linear model, scene-based NUC and so on have been developed. But each algorithm has some drawbacks:(More)
This paper presents a simple and effective method for image contrast enhancement called spatially weighted histogram equalization. Spatially weighted histogram not only considers the times of each grey value appears in a certain image, but also takes the local characteristics of each pixel into account. In the homogeneous region of an image, the spatial(More)
There is no special power testing equipment at home and abroad. And the electrical safety is related to every citizen's personal and property safety. This paper compares the existing handheld infrared thermometer and finds that the imaging is vague and many details are not resolved. Many handheld infrared thermometers are only using grayscale to display, so(More)
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