Results 11 to 20 of about 81,242 (307)
Context-Driven Active Contour (CDAC): A Novel Medical Image Segmentation Method Based on Active Contour and Contextual Understanding [PDF]
SensorsLung diseases, including chronic obstructive pulmonary disease (COPD) and pulmonary fibrosis, pose significant health challenges due to their high morbidity and mortality rates.
Suane Pires Pinheiro da Silva +8 more
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Multipass Active Contours for an Adaptive Contour Map [PDF]
Sensors, 2013 Isocontour mapping is efficient for extracting meaningful information from a biomedical image in a topographic analysis. Isocontour extraction from real world medical images is difficult due to noise and other factors.
Kwang Nam Choi +4 more
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A fast region-based active contour for non-rigid object tracking and its shape retrieval [PDF]
PeerJ Computer Science, 2021 Conventional tracking approaches track objects using a rectangle bounding box. Gait, gesture and many medical analyses require non-rigid shape extraction.
Hiren Mewada +5 more
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Directional geodesic active contours [PDF]
2012 19th IEEE International Conference on Image Processing, 2012 We present a non-conformal metric that generalizes the geodesic active contours approach for image segmentation. The new metric is obtained by adding to the Euclidean metric an additional term that penalizes the misalignment of the curve with the image gradient and multiplying the resulting metric by a conformal factor that depends on the edge ...
Guillermo Gallego 0002 +2 more
openaire +4 more sources
Active contour model by combining edge and region information discrete dynamic systems
Advances in Mechanical Engineering, 2017 The basic idea of active contour model upon the image segmentation problem is evolved into a closed curve about the functional minimization problems. Active contour model based on edge information takes advantage of gradient information, and it has some ...
Zhifeng Wang, Yan-Jun Liu
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Sparse texture active contour. [PDF]
IEEE Trans Image Process, 2013 In image segmentation, we are often interested in using certain quantities to characterize the object, and perform the classification based on criteria such as mean intensity, gradient magnitude, and responses to certain predefined filters. Unfortunately, in many cases such quantities are not adequate to model complex textured objects.
Gao Y, Bouix S, Shenton M, Tannenbaum A.
europepmc +6 more sources
Active Contour with a Tangential Component [PDF]
Journal of Mathematical Imaging and Vision, 2014 Conventional edge-based active contours often require the normal component of an edge indicator function on the optimal contours to approximate zero, while the tangential component can still be significant. In real images, the full gradients of the edge indicator function along the object boundaries are often small.
Wang, Junyan, Chan, Kap Luk
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Segmentation with Active Contours [PDF]
Image Processing On Line, 2021 Active contours (also known as snakes) have shown their ability to introduce regularity on image segmentation. In contrast with level-set approaches, the active contours techniques based on a contour parameterization are able to maintain the initial topology of the area of interest.
Pierre, Fabien +4 more
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ผลการพัฒนาระบบควบคุมคุณภาพของสินค้า ประเภทกางเกงใน ด้วยอัลกอริทึม Active Contour
Journal of Computer and Creative Technology, 2023 การวิจัยครั้งนี้มีวัตถุประสงค์ 1. เพื่อพัฒนาระบบควบคุมคุณภาพของสินค้า ประเภทกางเกงใน ด้วยอัลกอริทึมแอ็กทิฟคอนทัวร์ และ 2. เพื่อประเมินประสิทธิภาพและประสิทธิผลระบบควบคุมคุณภาพของสินค้าที่พัฒนาขึ้น งานวิจัยนี้เป็นการวิจัยและพัฒนา โดยใช้อัลกอริทึมแอ็กท ...
นนท์ปวิธ ทนทอง +1 more
doaj +1 more source
An active contour model based on local fitted images for image segmentation [PDF]
Information Sciences, 2017 Jiantao Pu, Xiaodong Yang
exaly +2 more sources