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Image matching method plays an important role in the research of bubble tracking and bubble rising velocity. A method of wavelet transform and cross-correlation technique combination was developed for image matching. A method for how to get the template windows were detailed at the beginning, which was based on label sticking. The template window also should appropriately adjust to meet the requirement...
Gray level co-occurrence matrix (GLCM) and the gray level-gradient co-occurrence matrix (GLGCM) were used to analyze gas/liquid flow images. Gas/liquid two-phase flow experiments were practiced and high-speed images were captured. A set of textural features were extracted from the GLCM and GLGCM. Examples of experimental results confirm the effectiveness of several features among them. All of the...
A geometric method of bubble volume computing based on 2-D high-speed image were introduced in this paper. An ellipsoid was constructed with three semi-axis extracted from bubble image. The volume of ellipsoid is approximately equal to the size of bubble. Correction methods are also described for error reducing. The feasibility and universal applicability of the geometric method have been verified...
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