GDL

Exploiting Hybrid Methods for Enhancing Digital X-Ray Images

2010
Journal from gdlhub / 2017-08-14 11:52:32
Oleh : Yusuf Abu Sadah, Nijad Al-Najdawi, Sara Tedmori, IAJIT
Dibuat : 2012-06-23, dengan 1 file

Keyword : X-Ray, radiography, image enhancement, spatial domain, frequency domain.
Subjek : Exploiting Hybrid Methods for Enhancing Digital X-Ray Images
Url : http://www.ccis2k.org/iajit/PDF/vol.10,no.1/3014-8.pdf
Sumber pengambilan dokumen : Internet

The principle objective of image enhancement is to process an image so that the result is more suitable than the


original image for a specific application. This paper presents a novel hybrid method for enhancing digital X-Ray radiograph


images by seeking optimal spatial and frequency domain image enhancement combinations. The selected methods from the


spatial domain include: Negative transform, Histogram equalization and Power-law transform. Selected enhancement methods


from the frequency domain include: Gaussian low and high pass filters and Butterworth low and high pass filters. Over 80


possible combinations have been tested, where some of the combinations have yielded in an optimal enhancement compared to


the original image, according to radiologist subjective assessments. Medically, the proposed methods have clarified the


vascular impression in hilar regions in regular X-Ray images. This can help radiologists in diagnosing vascular pathology,


such as Pulmonary Embolism in case of thrombus that has been logged in pulmonary trunk, which will appear as a filling


defect. The proposed method resulted in more detailed images hence, giving radiologists additional information about thoracic


cage details including clavicles, ribs, and costochondral junction.

Deskripsi Alternatif :

The principle objective of image enhancement is to process an image so that the result is more suitable than the


original image for a specific application. This paper presents a novel hybrid method for enhancing digital X-Ray radiograph


images by seeking optimal spatial and frequency domain image enhancement combinations. The selected methods from the


spatial domain include: Negative transform, Histogram equalization and Power-law transform. Selected enhancement methods


from the frequency domain include: Gaussian low and high pass filters and Butterworth low and high pass filters. Over 80


possible combinations have been tested, where some of the combinations have yielded in an optimal enhancement compared to


the original image, according to radiologist subjective assessments. Medically, the proposed methods have clarified the


vascular impression in hilar regions in regular X-Ray images. This can help radiologists in diagnosing vascular pathology,


such as Pulmonary Embolism in case of thrombus that has been logged in pulmonary trunk, which will appear as a filling


defect. The proposed method resulted in more detailed images hence, giving radiologists additional information about thoracic


cage details including clavicles, ribs, and costochondral junction.

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