Edge detection is one of the basic methods for various image processing functions such as image analysis, image segmentation, pattern recognition etc. This is a process to find out discontinuity of intensity in image....
详细信息
ISBN:
(纸本)9781509064717
Edge detection is one of the basic methods for various image processing functions such as image analysis, image segmentation, pattern recognition etc. This is a process to find out discontinuity of intensity in image. If some or all neighboring pixels form a convex region of same gray level intensity, then there exists an edge. In order to distinguish between different level of intensities in edge detection, a threshold is required which is usually different for different type of images due to variation in level of intensities. This paper proposes and compares two methods namely global and local thresholding to model the value of threshold through quantitative empirical method for cellular logic array processing based edge detection method. The performance of the modeled algorithms is measured by F1-score, recall-precision break-even-points and performance ratio. Experimental results show that the local thresholding approach gives slightly better F1-score and performance ratio for all scenarios of six Berkeley Segmentation Database images and respective ground truths. It has also been found that best percentage of threshold value can be determined in a better way by break-even-point rather than by best F1-score. The proposed approach reduces false edge detection and make threshold selection automatic for every scenario.
This paper proposes cellular logic array processing (CLAP) based 3-D surface detection algorithm. The performance of CLAP based surface detection algorithm (CLAP-BSD) is compared with four other algorithms: (i) Boykov...
详细信息
ISBN:
(纸本)9781479938414
This paper proposes cellular logic array processing (CLAP) based 3-D surface detection algorithm. The performance of CLAP based surface detection algorithm (CLAP-BSD) is compared with four other algorithms: (i) Boykov and Kolmogorov Based Surface Detection (BKBSD) algorithm, (ii) Push- Relabel (PR) Based Surface Detection (PRBSD) algorithm and (iii) Cheng Wang Ma (CWM) algorithm (iv) Mathematical Morphology Based Surface Detection (MMBSD) in terms of time complexity.
This paper introduces a novel algorithm called cellular logic array processing for extracting volumetric edges from 3D medical images. A sample MRI image of a human skull is used as a test data for analysis purposes. ...
详细信息
ISBN:
(纸本)9781467317146
This paper introduces a novel algorithm called cellular logic array processing for extracting volumetric edges from 3D medical images. A sample MRI image of a human skull is used as a test data for analysis purposes. A comparative study of the algorithm introduced in this paper with existing morphological algorithms has been made and results reported here. In addition, a modified morphological filter based 3D edge detecting algorithm has also been introduced in this paper.
This paper introduces a novel algorithm called cellular logic array processing for extracting volumetric edges from 3D medical images. A sample MRI image of a human skull is used as a test data for analysis purposes. ...
详细信息
ISBN:
(纸本)9781467317139
This paper introduces a novel algorithm called cellular logic array processing for extracting volumetric edges from 3D medical images. A sample MRI image of a human skull is used as a test data for analysis purposes. A comparative study of the algorithm introduced in this paper with existing morphological algorithms has been made and results reported here. In addition, a modified morphological filter based 3D edge detecting algorithm has also been introduced in this paper.
暂无评论