Contrast enhancement mammograms using denoising in wavelet coefficients

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Kidsumran V., Chiracharit W.

ผู้เผยแพร่: Hindawi

ปีที่เผยแพร่ (ค.ศ.): 2013

หน้าแรก: 82

หน้าสุดท้าย: 86

จำนวนหน้า: 5

ISBN: 9781479908066

นอก: 0146-9428

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883340573&doi=10.1109%2fJCSSE.2013.6567324&partnerID=40&md5=a17f3daa4e0b5e2e0cc708fb1fd21c85

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

Contrast enhancement in x-ray mammograms is important in improvement of radiologists' reading and interpretation. In many cases, it is difficult to discern signs of breast cancer because mammograms are low contrast and very noisy. This paper proposes improved contrast enhancement method in mammograms using denoising in wavelet coefficients. First, mammograms are decomposed by wavelet transform. Second, the ratio between approximate subband and detail subband as signal-to-noise ratio is computed. Finally, detail subbands which have the ratio lower than the criteria are boosted to improve mammograms contrast while detail subbands having the ratio higher than the criteria are set to zero for noise suppression in the same time. Contrast measure and peak-signal-to-noise ratio are used to evaluate the performance of the proposed method. The experimental results show higher contrast 17.05% than the conventional method while a bit different in peak-signal-to-noise ratio. ฉ 2013 IEEE.

คำสำคัญ

Contrast Improvement, Denoising, Mammograms, Wavelet Transform