High-precision three-dimensional quick collection method for footprints

Abstract

The invention discloses a small-sized intelligent three-dimensional collection instrument for footprints. The instrument at least comprises a footprint collection unit for collecting the footprints, afootprint information processing unit which is connected with the footprint collection unit and analyzes collected data and a footprint information display unit which displays the data which is processed by the footprint information processing unit. The footprint collection unit comprises a projector which vertically irradiates the surfaces of the footprints and continuously projects horizontal / vertical stripes, of different frequencies, chequered with black and white, and left / right collection units, and cameras for collecting the footprints are arranged on the left / right collection units respectively. According to the small-sized intelligent three-dimensional collection instrument for the footprints, a double-lens mode is changed into a three-lens mode, every two lens are combined to form three sets, interference and damage of the exterior to the footprints are fundamentally avoided, original lossless extraction is truly achieved, and the problems, such as man-made damage and deformation and dry shrinkage and cracks of materials at the later stage, due to a real object filling method can be solved.

Description

technical field [0001] The invention relates to a method for quickly collecting high-precision three-dimensional footprints, belonging to the field of footprint information collection and analysis. Background technique [0002] As an important trace information that reflects the biological characteristics of the human body, footprints have received widespread attention at home and abroad. Especially since the 1980s, footprint inspection technology has continuously developed towards quantification and automation, and has played an important role in actual case handling. Traditional photography, plaster molding and other means can meet the basic requirements of three-dimensional footprint extraction, but the efficiency, accuracy, and automation are low, and the operator needs to have certain extraction experience. It is difficult to extract the footprint of soft-based objects such as liquid and dust. On the other hand, the society is constantly progressing, the urbanization p...

AI Technical Summary

Problems solved by technology

Traditional photography, plaster molding and other methods can meet the basic requirements of three-dimensional footprint extraction, but the efficiency, accuracy, and automation are low, and the operator needs to have certain extraction experience. It is difficult to extract the footprint of soft-based objects such as liquid and dust.

On the other hand, the society is constantly progressing, the process of urbanization is accelerating, and the ground conditions have undergone tremendous changes. It is not realistic to use traditional methods to extract three-dimensional footprints in the "jungle" of reinforced concrete structures.

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