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现场上发现的用手指书写的字迹,与一般的痕迹有一些不同的显现与拍摄方法。在记录手指书写字迹时,要根据字迹固有的特点,运用各种方法显现并固定字迹。不同类型的手指书写字迹主要有灰尘字迹、镜面等强反光客体表面字迹,圆柱面、弧面等曲面上的灰尘字迹,汗液、油腻字迹,血字迹,墨水、颜料字迹,雪地、泥沙土地上的字迹等。对这些字迹可采用:一、偏角摄影及影像矫正。二、弧面字迹的拍摄及影像矫正。三、等距连续拍照法及曲面照片的拼接等。
Written handwriting found on the scene, with some traces of the general appearance and shooting methods. In writing finger writing handwriting, according to the inherent characteristics of writing, use a variety of methods to display and fix the handwriting. Different types of finger writing are mainly dust handwriting, mirror and other objects on the surface of strong reflective objects, such as dust on the cylinder surface, the surface of the arc, sweat, greasy handwriting, blood letters, ink, paint, snow, muddy land On the handwriting and so on. For these handwriting can be used: First, angle photography and image correction. Second, the arc of the filming and image correction. Third, equidistant continuous photography and surface photos, such as splicing.