In order to solve the problems of halo phenomenon and image noise enhancement when the traditional multi-scale Retinex algorithm enhances the details of infrared images
an infrared image detail enhancement algorithm based on improved mult-iscale Retinex is proposed. Firstly
an improved guided filter is used instead of the Gaussian filter to accurately estimate the incident component of the infrared image and calculate its reflection component to reduce the noise in the image and improve the halo phenomenon. Secondly
an adaptive grayscale stretching process is performed on the incident component
and a smoother non-linear curve is used to correct the reflected component
so as to achieve the purpose of better enhancing the overall brightness and contrast of the infrared image. The experimental results show that compared with other corresponding algorithms
the information entropy
peak signal-to-noise ratio
average gradient
and standard deviation have been improved. At the same time
the infrared enhanced image obtained by this algorithm has higher contrast and clearer details. The human eyes have better visual effects.
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references
CAO Y P, YANG M Y, TISSE C L. Effective strip noise removal for low-textured infrared images based on 1-D guided filtering[J]. IEEE Transactions on Circuits and Systems for Video Technology , 2016, 26(12): 2176-2188.
LIU C W, SUI X B, LIU Y, et al . FPN estimation based nonuniformity correction for infrared imaging system[J]. Infrared Physics & Technology , 2019, 96(8): 22-29.
ZHAN B C, WU Y Q, JI S X. Infrared image enhancement method based on stationary wavelet transformation and retinex[J]. Acta Optica Sinica , 2010, 30(10): 2788-2793. (in Chinese)
WANGA B, CHEN L L, LIU Y Z. New results on contrast enhancement for infrared images[J]. Optik , 2019, 178: 1264-1269.
HAO Y, WANG X S, ZHANG Y B, et al . The infrared image enhancement algorithm based on adapted scale factor Retinex[J]. Infrared Technology , 2016, 38(10): 855-859. (in Chinese)
LAND E H, MCCANN J J. Lightness and retinex theory[J]. Journal of the Optical Society of America , 1971, 61(1): 1-11.
JOBSOND J, RAHMAN Z, WOODELL G A. Properties and performance of a center/surround Retinex[J]. IEEE Transactions on Image Processing , 1997, 6(3): 451-462.
JOBSOND J, RAHMAN Z, WOODELL G A. A multiscale Retinex for bridging the gap between color images and the human observation of scenes[J]. IEEE Transactions on Image Processing , 1997, 6(7): 965-976.
LIU Y, YU J H, GU Z Q, et al . Research and application of an improved enhanced image processing algorithm[J]. Laser & Infrared , 2019, 49(3): 381-384. (in Chinese)
ZHANG C H, LI F M, WU Y Y. Infrared image enhancement based on adaptive guided filter and sub-band decomposed multi-scale Retinex[J]. Infrared Technology , 2019, 41(4): 323-328. (in Chinese)
SONG Y, XIA Z P, HU F Y, et al . Moving image quality of liquid crystal display based on human factor[J]. Chinese Journal of Liquid Crystals and Displays , 2020, 35(10): 1051-1058. (in Chinese)
ASHIBAM I, TOLBA M S, EL-FISHAWY A S, et al . Gamma correction enhancement of infrared night vision images using histogram processing[J]. Multimedia Tools and Applications , 2019, 78(19): 27771-27783.
ZHAO C, LV G Q, WU L, et al . Dynamic dimming algorithm for liquid crystal display based on local brightness of image[J]. Chinese Journal of Liquid Crystals and Displays , 2020, 35(3): 234-241. (in Chinese)
CHENG Y Y, YU H D, YU Z J, et al . Method of enhancing the quality of in-line holographic images for micro-milling tool[J]. Chinese Optics , 2020, 13(4): 705-712. (in Chinese)