2009
DOI: 10.1016/j.compbiomed.2009.07.005
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Application of the iris filter for automatic detection of pulmonary nodules on computed tomography images

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Cited by 62 publications
(50 citation statements)
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“…Pixels are classified according to two categories: pixels corresponding to dense tissue and pixels belonging to the lower density regions. Adaptive thresholds that automatically converge to the optimum gray level value for each image were calculated [13] ; it could not be selected a global threshold for all the images , because the gray level values varied on the different CT images, depending on the acquisition parameters. As a result, binary images containing the two previously described regions were obtained.…”
Section: Cad Schemementioning
confidence: 99%
See 2 more Smart Citations
“…Pixels are classified according to two categories: pixels corresponding to dense tissue and pixels belonging to the lower density regions. Adaptive thresholds that automatically converge to the optimum gray level value for each image were calculated [13] ; it could not be selected a global threshold for all the images , because the gray level values varied on the different CT images, depending on the acquisition parameters. As a result, binary images containing the two previously described regions were obtained.…”
Section: Cad Schemementioning
confidence: 99%
“…Inc., Chicago, IL) [18] . To reduce FP detections, we developed a multistage classifier to discriminate between nodules and FPs [13] .…”
Section: Cad Schemementioning
confidence: 99%
See 1 more Smart Citation
“…After initial segmentation, lung volume has been extracted using several methods, and the extracted lung volume needed to be refined to include juxta-pleural nodules. For these purposes, morphological approaches [8,14], a rolling ball algorithm [5,15], and a chain code representation-based method [9] have been presented.…”
Section: Introductionmentioning
confidence: 99%
“…There are a variety of methods for extracting lung volume from a pulmonary CT scan. In order to segment lung, approaches such as global thresholding [5,6], optimal thresholding [7,8], three-dimensional (3-D)-adaptive fuzzy thresholding [9], rule-based region growing [10], connected component labeling [11], graph-cut algorithm [12], and hybrid segmentation [13] have generally been used. After initial segmentation, lung volume has been extracted using several methods, and the extracted lung volume needed to be refined to include juxta-pleural nodules.…”
Section: Introductionmentioning
confidence: 99%