三峡升船机塔柱链孔部分光弹性研究

应用三维光弹应力冻结切片技术，对三峡升船机塔柱链孔部分的应力集中现象进行了分析研究，其切片的等差线及等倾线条纹均采用计算机数字图象处理技术处理，因此计算结果具有较高的精度。所有测试数据均得到有限元计算的论证。     

Unsupervised color-texture image segmentation

The measure J in J value segmentation （JSEG） fails to represent the discontinuity of color, which degrades the robustness and discrimination of JSEG. An improved approach for JSEG algorithm was proposed for unsupervised color-texture image segmentation. The texture and photometric invariant edge information were combined, which results in a discriminative measure for color-texture homogeneity. Based on the image whose pixel values are values of the new measure, region growing-merging algorithm used in JSEG was then employed to segment the image. Finally, experiments on a variety of real color images demonstrate performance improvement due to the proposed method.