随着犯罪现场遗留指纹物证的减少,成功拍照提取白色或浅色平整光亮客体上的汗潜指纹将成为刑事科学技术检验中亟待解决的问题。由于白色或浅色平整光亮客体有其独到的物理性质和形成机理,我们利用不同角度和强度的常规光线对白色或浅色平整光亮客体上的汗潜指纹反复实验,探讨、总结出“定向反射摄影”的拍摄方法。 With the reduction of fingerprint evidences left over from the crime scene, the successful extraction of sweat latent fingerprints on white or light-colored flat and bright objects will become an urgent problem to be solved in the criminal science and technology test. Because the white or light-colored flat bright object has its own unique physical properties and formation mechanism, we use the conventional light of different angles and intensities to repeatedly test the sweat latent fingerprints on the white or light-colored flat bright object, Reflection photography "shooting method.