生物散斑是激光照射在生物体表面产生的散斑现象。生物散斑的变化与生物体内的某些性质相关联，因而作为一种新型检测技术被广泛研究。生物散斑测量技术是一种无需全场扫描、非侵入式、可实时处理和可定性/定量测量的光学测量方法，在生物医学和农业领域得到了广泛的应用。对生物散斑测量的原理进行了分析，简述了国内外此项技术的研究进展和成果，并对常用的生物散斑图像处理算法的原理及优缺点进行了比较。

Biospeckle is a phenomenon generated by laser light scattering in biological tissues or surfaces. The shape and intensity of speckle pattern vary with time, and this variance is believed to have relation with the biological activity of the sample. Biospeckle is a kind of optical measuring technology which has many advantages such as whole field measuring, non-contacting, real time, etc. Hence it is applied widely in the areas of biomedicine and agriculture. A brief introduction to the theory is presented. The research progress and achievements are also introduced. The theory and characteristic of main image processing methods are analyzed and compared.