Image Processing For Particle Measurement

Particle size and shape are important for the characters of powder. It is necessary to measure the size and shape of particles of powder. In many methods of particle measurement, microimage method is one of the most popular methods for its intuitionistic, comprehensive morphological information and easiness to measure.The four parts of measurement system based on microimage method are studied at first in this paper, and then a series of apparatus for experimentation are assembled. Images can be gotten by microscope with CCD and computer.The system of particle measurement based on microimage method is built to study the image processing with the software of MATLAB. The microimages of particles on the glass slide are collected by CCD camera, and transformed into a new image whose foreground and background are separate. Distribution of powder can be obtained after that all the parameters of area and perimeter of particles have been measured.A new method of particle image analyzing is studied in the paper. The area of every image is chosen as object for process, where information is concentrated and easy to recognize. Those particles which are segmented by the border of image are discarded. The efficiency of image processing is improved through these steps. Contrast with traditional methods of image processing, this method is a speedier processing and has a better result.A new segmentation algorithm is developed in this paper, which is used to segment the overlapping parts in image. Image segmentation is one of the most important steps during particle image recognition and analysis processing. The algorithm based on watershed transform is improved. The distance transform, watershed transform and morphological reconstruction are integrated to segment images commendably.A new method to calculate the number of particles is presented in this paper. The number of pixels of particle is decreased by scanning the image, the border can be...