In order to improve the image quality in fog, this paper presents a fog-image enhancement algorithm based on adaptive guided image filter Retinex theory. Firstly convert the image from the RGB color space to the HSV color space, Then, the luminance image is estimated by adaptive guided image filter, the saturation image is linearly stretched. Finally, the image is transformed back from HSV colo...

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In human lives images have an important role. To analyze traffic, satellite images are used, in developed cities traffic analysis is done through CCTV cameras. Images captured under bad weather conditions suffer low contrast so their quality degrades with the changes in atmosphere. The main reason behind the image degradation is atmospheric scattering, which is light received from scene points ...

Eukaryotic messenger RNAs are synthesized by the multisubunit enzyme RNA polymerase II, aided by myriad cofactors that control different events in this multistep process. A complete round of transcription involves: the recruitment of polymerase and general transcription factors to the promoter, RNA chain initiation and polymerase escape from the promoter, RNA chain elongation, and finally termi...