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在刑事案件现场勘查侦查中,手印的发现与检验提取,对案件的侦破具有重要的作用,准确的分析手印及其承载客体,明确案件现场手印的提取方式,采用合理的甄别过程检验鉴定。通过专业的配光技术来消除背景干扰,对潜在手印进行搜索并准确的提取。采用数码分色摄影的方式可以有效的提高手印的提取质量,消除手印的背景干扰,加强背景与手印之间的反差水平,从而达到对手印的显现目的。本文将针对手印反差的实际对比标准进行合理的分析,充分研究手印反差处理的标准水平,采用合理有效的方式,提高对手印的影像检验的效率及准确性。
In the investigation and investigation of criminal cases, the discovery and verification of fingerprints plays an important role in the detection of cases, accurately analyzing fingerprints and their carrying objects, clarifying the extraction methods of fingerprints on the scene of the case, and adopting reasonable screening process to test and verify. Eliminate background interference with professional light distribution techniques, search for potential fingerprints, and extract accurately. The use of digital color photography can effectively improve the quality of fingerprint extraction, eliminating the background interference of fingerprints and strengthening the contrast between the background and fingerprints so as to achieve the purpose of displaying fingerprints. In this paper, we will conduct a reasonable analysis based on the actual comparison standards of handprint contrast, fully study the standard level of handprint contrast processing, and improve the efficiency and accuracy of image inspection of handprint in a reasonable and effective way.