Effects of Contrast Limited Adaptive Histogram Equalization (CLAHE) on Manual and Automated Tracing of Lateral Cephalometric Radiographs

Merve Gonca; Çiğdem Sazak; Şeyma Gündoğdu

Makale detayları

Effects of Contrast Limited Adaptive Histogram Equalization (CLAHE) on Manual and Automated Tracing of Lateral Cephalometric Radiographs

Yazarlar:

Merve Gonca | Çiğdem Sazak | Şeyma Gündoğdu

Yayıncı:

Marmara University

Ana Başlıklar:

Oral and Maxillofacial Radiology | Orthodontics and Dentofacial Orthopaedics

Dergi:

Clinical and Experimental Health Sciences Vol.14 Issue 3, pp.733-744

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001328367

pISSN:

2459-1459

Anahtar kelimeler:

Özet:

 Objective: The aim of this study is to compare the difference between original lateral cephalometric radiographs LCRs and Contrast Limited Adaptive Histogram Equalization CLAHE LCRs in two examiners and WebCeph. Methods: A total of 200 LCRs were selected, and CLAHE tile size: 2020 was applied to the original LCRs. 27 LCR landmarks were manually determined by two examiners and, the selected LCRs determined automatically using the WebCeph program. Absolute differences between the original LCRs and CLAHE-LCRs were calculated in the x-y axes and Euclidean distance. The Kruskal Wallis test was used for comparisons between the examiners and WebCeph. The Wilcoxon Signed Rank Test was used to evaluate the x and y axes within each group. Results: The best accuracy values were seen in examiner 1 along the x-y axes and Euclidean distance, while the worst accuracy values were seen in WebCeph. The mean differences according to the methods were higher along the y-axis than along the x-axis for both examiners except PNS, Me and WebCeph except Po, Co. The mean Euclidean distances were above 2 mm only in Co, PNS at Examiner 1, PNS, Po, Ba, Co, Go, Pog, U1RT, Me, Pog at Examiner 2, and WebCeph in all measurements. However, the differences in Euclidean distances were less than 4 mm for both examiners and WebCeph. Conclusion: CLAHE-LCRs require more adjustments for landmark determination in WebCeph than the in the manual system.

 Objective: The aim of this study is to compare the difference between original lateral cephalometric radiographs LCRs and Contrast Limited Adaptive Histogram Equalization CLAHE LCRs in two examiners and WebCeph. Methods: A total of 200 LCRs were selected, and CLAHE tile size: 2020 was applied to the original LCRs. 27 LCR landmarks were manually determined by two examiners and, the selected LCRs determined automatically using the WebCeph program. Absolute differences between the original LCRs and CLAHE-LCRs were calculated in the x-y axes and Euclidean distance. The Kruskal Wallis test was used for comparisons between the examiners and WebCeph. The Wilcoxon Signed Rank Test was used to evaluate the x and y axes within each group. Results: The best accuracy values were seen in examiner 1 along the x-y axes and Euclidean distance, while the worst accuracy values were seen in WebCeph. The mean differences according to the methods were higher along the y-axis than along the x-axis for both examiners except PNS, Me and WebCeph except Po, Co. The mean Euclidean distances were above 2 mm only in Co, PNS at Examiner 1, PNS, Po, Ba, Co, Go, Pog, U1RT, Me, Pog at Examiner 2, and WebCeph in all measurements. However, the differences in Euclidean distances were less than 4 mm for both examiners and WebCeph. Conclusion: CLAHE-LCRs require more adjustments for landmark determination in WebCeph than the in the manual system.

 Objective: The aim of this study is to compare the difference between original lateral cephalometric radiographs LCRs and Contrast Limited Adaptive Histogram Equalization CLAHE LCRs in two examiners and WebCeph. Methods: A total of 200 LCRs were selected, and CLAHE tile size: 2020 was applied to the original LCRs. 27 LCR landmarks were manually determined by two examiners and, the selected LCRs determined automatically using the WebCeph program. Absolute differences between the original LCRs and CLAHE-LCRs were calculated in the x-y axes and Euclidean distance. The Kruskal Wallis test was used for comparisons between the examiners and WebCeph. The Wilcoxon Signed Rank Test was used to evaluate the x and y axes within each group. Results: The best accuracy values were seen in examiner 1 along the x-y axes and Euclidean distance, while the worst accuracy values were seen in WebCeph. The mean differences according to the methods were higher along the y-axis than along the x-axis for both examiners except PNS, Me and WebCeph except Po, Co. The mean Euclidean distances were above 2 mm only in Co, PNS at Examiner 1, PNS, Po, Ba, Co, Go, Pog, U1RT, Me, Pog at Examiner 2, and WebCeph in all measurements. However, the differences in Euclidean distances were less than 4 mm for both examiners and WebCeph. Conclusion: CLAHE-LCRs require more adjustments for landmark determination in WebCeph than the in the manual system.

 Objective: The aim of this study is to compare the difference between original lateral cephalometric radiographs LCRs and Contrast Limited Adaptive Histogram Equalization CLAHE LCRs in two examiners and WebCeph. Methods: A total of 200 LCRs were selected, and CLAHE tile size: 2020 was applied to the original LCRs. 27 LCR landmarks were manually determined by two examiners and, the selected LCRs determined automatically using the WebCeph program. Absolute differences between the original LCRs and CLAHE-LCRs were calculated in the x-y axes and Euclidean distance. The Kruskal Wallis test was used for comparisons between the examiners and WebCeph. The Wilcoxon Signed Rank Test was used to evaluate the x and y axes within each group. Results: The best accuracy values were seen in examiner 1 along the x-y axes and Euclidean distance, while the worst accuracy values were seen in WebCeph. The mean differences according to the methods were higher along the y-axis than along the x-axis for both examiners except PNS, Me and WebCeph except Po, Co. The mean Euclidean distances were above 2 mm only in Co, PNS at Examiner 1, PNS, Po, Ba, Co, Go, Pog, U1RT, Me, Pog at Examiner 2, and WebCeph in all measurements. However, the differences in Euclidean distances were less than 4 mm for both examiners and WebCeph. Conclusion: CLAHE-LCRs require more adjustments for landmark determination in WebCeph than the in the manual system.

Makale detayları

Effects of Contrast Limited Adaptive Histogram Equalization (CLAHE) on Manual and Automated Tracing of Lateral Cephalometric Radiographs

Yazarlar:

Merve Gonca | Çiğdem Sazak | Şeyma Gündoğdu

Yayıncı:

Marmara University

Ana Başlıklar:

Oral and Maxillofacial Radiology | Orthodontics and Dentofacial Orthopaedics

Dergi:

Clinical and Experimental Health Sciences Vol.14 Issue 3, pp.733-744

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001328367

pISSN:

2459-1459

orthodontics

radiography

cephalometry

image enhancement

artificial intelligence

diagnostic imaging

Sayı

Makale detayları

Effects of Contrast Limited Adaptive Histogram Equalization (CLAHE) on Manual and Automated Tracing of Lateral Cephalometric Radiographs

Yazarlar: Merve Gonca | Çiğdem Sazak | Şeyma Gündoğdu

Yayıncı: Marmara University

Ana Başlıklar: Oral and Maxillofacial Radiology | Orthodontics and Dentofacial Orthopaedics

Dergi: Clinical and Experimental Health Sciences Vol.14 Issue 3, pp.733-744

Belge Tipi: Makale

Yayın Tarihi: 9/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001328367

pISSN: 2459-1459

orthodontics

radiography

cephalometry

image enhancement

artificial intelligence

diagnostic imaging

Sayı

Yazarlar:

Merve Gonca | Çiğdem Sazak | Şeyma Gündoğdu

Yayıncı:

Marmara University

Ana Başlıklar:

Oral and Maxillofacial Radiology | Orthodontics and Dentofacial Orthopaedics

Dergi:

Clinical and Experimental Health Sciences Vol.14 Issue 3, pp.733-744

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001328367

pISSN:

2459-1459