浅谈印章印文的边框特征

本文通过对印章边框特征的产生原理及种类的分析与研究,阐述了影响印章边框特征的因素,提出了应用边框特征检验印章印文应注意的基本事项。     

自动消色笔书写笔迹显现方法的实验研究

目的为自动消色笔书写笔迹的显现识别提供最佳方法。方法通过观察不同种类的自动消色笔书写在不同纸张上,保存在不同环境下的笔迹的消色过程、消色时间,分析判断消色笔书写笔迹的基本特性。使用文检仪、静电压痕仪、不同浓度的氢氧化钠溶液显现消色笔迹,比较不同显现识别方法的特点及优劣。结果不同的显现方法各有优劣,使用氢氧化钠溶液显色效果的最佳浓度为1.0 mol。结论在自动消色笔书写笔迹的显现中,可以根据不同情况,选择合适的显现方法达到识别检验的目的。     

“同版“印章的实验研究

制作了13枚"同版"渗透型印章和激光雕刻印章,分析了这些"同版"印章的印面特征和盖印印文特征.研究发现,相同条件下制作的"同版"印章的个体差异十分微小,如果考虑到各种盖印条件下,这些印章盖印印文特征的变化范围,"同版"印章印文的检验是十分困难的,甚至是不可能的.     

印章业的治安管理

当前印章行业存在着各类违法犯罪行为,特别是利用伪造公章进行的违法犯罪活动异常猖獗,且呈现出上升趋势,从某种程度上说小小的“印章”已经成为了许多犯罪的“源头”,给社会公共秩序的稳定带来极大的不利因素。而对印章业的管理存在着一些缺陷,要从立法和落实印章业经营者、公安机关、用章单位的责任和义务及提高印章管理科技含量的角度,采取有针对性的管理对策。     

光谱成像检验法在朱墨时序鉴定中的应用

光敏印文色料与签字笔书写色料交叉重叠后,因互溶渗透不易形成层状结构而使判定朱墨时序的难度较大。光谱成像检验法是通过比较交叉点、纯印文色料、纯墨迹色料处的反射曲线位置来判定交叉时序关系。     

中国古代言谏制度探究

言谏制度是中国古代监察制度的重要组成部分,它与御史制度构成了中国古代监察制度的两翼.其咨询、规谏的职守和作为,凸显出自己特有的光彩,给古代封建专制政体注入了一股难能可贵的活力.拟就我国古代言谏制度的源流演变及其实施、得失进行探讨,以对当代我国的行政监察制度提供一定的史鉴参考.     

签字笔水、圆珠笔油红外发光特性的研究

目的记录不同激发光、接收滤光镜下,各种油墨红外发光强弱的程度,为文字检验提供基础性的研究。方法用多波段光源中510~650nm单色光激发各种油墨样本,全波段物证检验CCD系统记录样本在530~950nm接收滤光镜下出现的红外发光图像。结果多数油墨在接收滤光镜到达800~850nm时,呈现出强烈的红外发光状态,并随接收波段的上升而开始衰减。结论可利用某些油墨的发光与否,发光强与弱的特性,检验案件中涂改和涂抹字迹。     

Color Separation in Forensic Image Processing Using Interactive Differential Evolution

Color separation is an image processing technique that has often been used in forensic applications to differentiate among variant colors and to remove unwanted image interference. This process can reveal important information such as covered text or fingerprints in forensic investigation procedures. However, several limitations prevent users from selecting the appropriate parameters pertaining to the desired and undesired colors. This study proposes the hybridization of an interactive differential evolution (IDE) and a color separation technique that no longer requires users to guess required control parameters. The IDE algorithm optimizes these parameters in an interactive manner by utilizing human visual judgment to uncover desired objects. A comprehensive experimental verification has been conducted on various sample test images, including heavily obscured texts, texts with subtle color variations, and fingerprint smudges. The advantage of IDE is apparent as it effectively optimizes the color separation parameters at a level indiscernible to the naked eyes.     

民事诉讼中利用真实印文伪造证据的系统鉴定

本文以四个案件为例,阐述了民事诉讼中利用真 实印文伪造证据的特点,如何对此类案件进行鉴定以及鉴 定时应注意的问题,最后提出了三点建议。     

Color separation in forensic image processing

In forensic image processing, it is often important to be able to separate a feature from an interfering background or foreground, or to demonstrate colors within an image to be different from each other. In this study, a color deconvolution algorithm that could accomplish this task is described, and it is applied to color separation problems in document and fingerprint examination. Subtle color differences (sometimes invisible to the naked eye) are found to be sufficient, which is demonstrated successfully for several cases where color differences were shown to exist, or where colors were removed from the foreground or background. The software is available for free in the form of an Adobe Photoshop-compatible plug-in.