Forensic Photo Frame for Angular Distortion Reduction
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Solution Overview
Problem
Forensic photography, particularly in bitemark analysis, faces challenges with distortion due to improper orientation of scales and cameras, leading to inaccurate and unreliable photographic records that can hinder the identification of biter characteristics.
Innovation Solution
A forensic photo frame that ensures a fixed relationship between the camera and reference scales, reducing or eliminating distortion by providing a structured frame for accurate positioning and alignment, applicable to conventional, digital, or video photography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reference scale is placed in the photographed field to provide size reference, then measurement capability is improved, but distortion occurs due to improper orientation of the scale and camera
Solution Approach 1:
The patent introduces a frame as an intermediary device that holds the reference scale in a fixed, predetermined orientation relative to the camera. This frame acts as a mediator between the camera and the scale, ensuring proper alignment and eliminating distortion caused by improper orientation. The frame provides a structured framework that guarantees the scale is positioned correctly within the photographed field.
2Ease of operation
If the camera angle is not perpendicular to the plane of the scale and subject, then flexibility in positioning is improved, but angular distortion occurs
Solution Approach 1:
The frame is designed with the reference scale pre-positioned in the correct orientation relative to the camera plane. This preliminary arrangement ensures that when the frame is placed against the subject, the scale is automatically in the proper position and orientation, eliminating the need for complex camera angle adjustments and preventing angular distortion before photography begins.
3Ease of operation
If the scale is not in the same plane as the subject, then ease of placement is improved, but photogrammetric accuracy deteriorates
Solution Approach 1:
The frame combines multiple functions into a single device: it holds the reference scale, provides a flat plane for subject placement, and ensures proper camera alignment. By merging the scale holder, subject support, and alignment guide into one integrated frame structure, the patent achieves both ease of placement and photogrammetric accuracy simultaneously.
Data Source
AI summary
A camera mount, comprising a camera mounting portion, wherein a camera can be removably coupled to the camera mounting portion, such that a photographic plane of the camera is parallel to a photographic plane of the camera mounting portion; a rail portion, wherein the rail portion extends from the camera mounting portion substantially perpendicular to the photographic plane of the camera mounting portion; and a frame, wherein the frame is adapted to receive one or more reference scales such that a photographic plane of the one or more reference scales is parallel to a photographic plane of the camera mounting portion, and wherein the frame is coupled to the rail portion such that a photographic plane of the frame is parallel to a photographic plane of the camera mounting portion elements.