A NEW HISTOGRAM EQUALIZATION METHOD WITH MODIFIED DISCRETE HAAR WAVELET TRANSFORM
نویسندگان
چکیده
Histogram e?itleme dijital görüntülerin kontrast?n? art?rmak için kullan?lan yöntemlerden biridir. ?deal histogram yöntemlerinde, girdi ve ç?kt? aras?ndaki görüntü benzerli?ini koruyarak histogramdaki da??l?mlar? tekdüze hale getirerek kontrast gerilmektedir. Frekans alan?nda yap?lan bu çal??mada, Dü?ük Dinamik Aral???nda de?i?tirilmi? ayr?k Haar Dalgac?k Dönü?ümü ile yeni bir germe yöntemi önerilmi?tir. Bu yöntemde Olas?l?k Kütle Fonksiyonunu frekanslar?n yüksek geçi? kanal?nda gürültülü frekanslara bask?lama i?lemi gerçekle?tirilmi?tir. Daha sonra frekans dönü?ümlerinde dinamik aral?klar?nda önemli azalma sa?lanm??t?r. alan?ndaki i?lem görüntüde standart sapman?n artmas?n? sa?layarak kalitesinin iyile?mesini sa?lar. K?yaslamal? veri seti üzerinde deneysel çal??malarda, önerilen yöntem konvansiyonel metotlarla k?yaslanm?? umut verici sonuçlar elde edilmi?tir. Görüntü kalitesi de?erlendirme metriklerinden Tepe Sinyal Gürültü Oran? (PSNR), Ortalama Kare Hata (MSE), Yap?sal Benzerlik Endeks Ölçütü (SSIM) Kontrast de?eri çal??malarda kullan?lm??t?r. Önerilen yakla??m edilen di?er algoritmalar?n sonuçlar? k?yasland???nda hem kalitatif de kantitatif aç?dan ba?ar?l? bulunmu?tur.
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ژورنال
عنوان ژورنال: Mühendislik bilimleri ve tasar?m dergisi
سال: 2022
ISSN: ['1308-6693']
DOI: https://doi.org/10.21923/jesd.931771