Histogramequalization Based Methods For Brightness Preservation And Local Content Emphasis

• Main Author: Nicholas , Sia Pik Kong
• Format: Thesis
• Language: English
• Published: 2009
• Subjects: TK1-9971 Electrical engineering. Electronics. Nuclear engineering
• Online Access: http://eprints.usm.my/41560/1/Nicholas_Sia_Pik_Kong.pdf; http://eprints.usm.my/41560/

Penyeragaman Histogram Sejagat (Global Histogram Equalization (GHE)) adalah salah satu kaedah penyerlahan imej yang terkenal. GHE masih mempunyai batasan walaupun ia mudah dan dikenali. Oleh kerana itu, terdapat dua kaedah baru yang berdasarkan Penyeragaman Histogram (Histogram Equalization (HE)) telah dicadangkan iaitu Penyeragaman Histogram Dinamik Kecerahan Berkekalan (Brightness Preserving Dynamic Histogram Equalization (BPDHE)) dan Penyeragaman Histogram Bertindih Blok Berbilang Aras (Multi-Levels Block Overlapped Histogram Equalization (MLBOHE)). Global Histogram Equalization (GHE) is one of the well-known image enhancement methods. Despite of its simplicity and popularity, GHE still has limitations. Therefore, in this work, two novel Histogram Equalization (HE) based methods have been proposed, which are Brightness Preserving Dynamic Histogram Equalization (BPDHE) and Multi-Levels Block Overlapped Histogram Equalization (MLBOHE).