TY - JOUR
T1 - A Two-Stage Color Image Segmentation Method Based on Saturation-Value Total Variation
AU - Wang , Tiange
AU - Wong , Hok Shing
JO - Advances in Applied Mathematics and Mechanics
VL - 1
SP - 94
EP - 117
PY - 2022
DA - 2022/10
SN - 15
DO - http://doi.org/10.4208/aamm.OA-2021-0314
UR - https://global-sci.org/intro/article_detail/aamm/21127.html
KW - Color space, pure quaternion, image segmentation, total variation, primal-dual algorithm.
AB - <p style="text-align: justify;">Color image segmentation is crucial in image processing and computer vision. Most traditional segmentation methods simply regard an RGB color image as
the direct combination of the three monochrome images and ignore the inherent color
structures within channels, which contain some key feature information of the image.
To better describe the relationship of color channels, we introduce a quaternion-based
regularization that can reflect the image characteristics more intuitively. Our model
combines the idea of the Mumford-Shah model-based two-stage segmentation method
and the Saturation-Value Total Variation regularization for color image segmentation.
The new strategy first extracts features from the color image and then subdivides the
image in a new color feature space which achieves better performance than methods in RGB color space. Moreover, to accelerate the optimization process, we use a
new primal-dual algorithm to solve our novel model. Numerical results demonstrate
clearly that the performance of our proposed method is excellent.</p>