Một phương pháp tăng cường độ tương phản ảnh viễn thám dựa trên tiếp cận cục bộ

  • Nguyễn Tu Trung Viện CNTT, Viện Hàn Lâm KH&CN VN
  • Vũ Văn Thỏa Học viện Công nghệ Bưu chính Viễn thông
  • Đặng Văn Đức Viện CNTT, Viện Hàn Lâm KH&CN VN


The image enhancement methods are divided into 3 categories including histogram, fuzzy logic and optimal methods. Histogram based contrast enhancing methods focus on modifying histogram of images. Histogram specification and histogram equalization are commonly used as conventional contrast enhancement mothods. Patently, the fuzzy logic based image enhancement methods make image which quality is  clearer than the traditional methods. However, these methods still use the global approach, therefore, it is difficult to enhance all land covered in remote sensing images. This paper proposes a local approach based new algorithm of image enhancement for the remote sensing images and the large size remote sensing images, calculating auto thresholds and combination the grey adjust operators.


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