目的:形成一种适用于提取茚三酮显现指印的图像优化方法。方法:利用光谱成像仪采集茚三酮显现指印的光谱影像集,选择恰当的基准点,运用光谱影像分析软件对指印图像进行优化处理。结果:茚三酮显现指印的图像反差得到增强,背景干扰减弱,部分潜在纹线被显现。结论:利用光谱成像技术可以对茚三酮显现指印的图像进行优化。 Objective: To develop an image optimization method suitable for extraction of ninhydrin developing fingerprints. Methods: Spectral images of ninhydrin-induced fingerprints were collected by spectral imager, the appropriate datum points were selected, and the fingerprint images were optimized by spectral image analysis software. Results: The image contrast of ninhydrin fingerprints was enhanced, the background interference weakened, and some of the potential streaks appeared. Conclusion: The image of ninhydrin-induced fingerprinting can be optimized using spectral imaging techniques.