Based on the definition of the conception of the small watershed,the theory of the watershed analysis was inducted to water environmental planning and a framework of the water environmental planning for the small watershed was proposed.

Laplace watershed segmentation based on minimum energy

In order to reduce the algorithm operation time,we propose a novel segmentation algorithm of marrow cell images based on the mathematical morphological pyramid and the watershed segmentation.

Thirdly, this thesis makes a detailed analysis for over-segmentation problem of the watershed segmentation algorithm, and improves this segmentation algorithm.

A study of the regional diffluence and industry diffluence of rural surplus labor;

In this paper a watershed algorithm is applied to separate the conglutination of food insect images based on mathematical morphology,which can reduce its effect on consequent process and better than erosion algorithm.

In order to improve resolution of the images,according to characteristics of human vision,the method of gray-scale/color transform and the method of image segmentation based on the watershed algorithm are used to realize the aim of turning gray-scale images into color ones.