论"二次漫射法"及其具体应用

采用“二次漫射法”拍照来加强平面强反光物体上反差微弱的疑难指纹与承受载体之间的亮度差,显露指纹,简便易行,效果良好。应用“二次漫射法”拍照要求选用适宜的照相器材,掌握正确的操作方法和原理,方可获得良好的拍摄效果,改善指纹痕迹的检验条件。

On "Two-time Diffusion Method" and Its Specific Application

It's simple and convenient to adopt the "two-time diffusion method" to photograph and thus strengthen the contrast between weak difficult fingerprints and withstanding carrier luminosity difference on the plane strong reflection object,reveal the fingerprints with good effect.Using "two-time diffusion method" to photograph requires appropriate photographic equipment,grasping the correct operating methods and principles,on which good photographic effect can be obtained and the examination conditions of examining fingerprint trace can be improved.