Random adjustment - based Chaotic Metaheuristic algorithms for image contrast enhancement
نویسندگان
چکیده
منابع مشابه
Developing a PC-based portal image contrast enhancement program
ABSTRACTBackground: Delivering the radiation dose to the target volume and minimizing the dose to normal tissues are the main objectives in radiotherapy. The aim of our study is to enhance the contrast of the portal image to increase the accuracy of delineation of the organs in the irradiation field. Methods: The software was written based on local enhancement of the pixel values in image ma...
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The goal of contrast enhancement is to improve visibility of image details without introducing unrealistic visual appearances and/or unwanted artefacts. While global contrast-enhancement techniques enhance the overall contrast, their dependences on the global content of the image limit their ability to enhance local details. They also result in significant change in image brightness and introdu...
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Image enhancement methods have been widely used to improve the visual effects of images. Owing to its simplicity and effectiveness histogram equalization (HE) is one of the methods used for enhancing image contrast. However, HE may result in over-enhancement and feature loss problems that lead to unnatural look and loss of details in the processed images. Researchers have proposed various HE-ba...
متن کاملdeveloping a pc-based portal image contrast enhancement program
abstractbackground: delivering the radiation dose to the target volume and minimizing the dose to normal tissues are the main objectives in radiotherapy. the aim of our study is to enhance the contrast of the portal image to increase the accuracy of delineation of the organs in the irradiation field. methods: the software was written based on local enhancement of the pixel values in image mat...
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The focus of this paper is to improve the level of security and secrecy provided by the chaotic map based image encryption.An encryption algorithm based on the Logistic and the Henon maps is proposed. The algorithm uses chaotic iteration to generate the encryption keys, and then carries out the XOR and cyclic shift operations on the plain text to change the values of image pixels. Chaotic Map L...
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ژورنال
عنوان ژورنال: Jurnal Ilmu Komputer dan Informasi
سال: 2017
ISSN: 2502-9274,2088-7051
DOI: 10.21609/jiki.v10i2.375