Abstract：
As part of a comprehensive analysis, this case report presents a possible case of child maltreatment that can serve as a basis for forensic and medical examiner investigations. This case concerns the death of an infant who was approximately two months old. During a routine examination by the pediatrician at the end of May 2021, the child was found to have a normal head circumference of 31 cm. No other abnormalities were noted. On June 19, 2021, the child died, and an autopsy revealed a head circumference of 44 cm and a subdural hematoma as the cause of death. Questions arose as to who might have abused the child and when. The only evidence was a low-quality cell phone video taken by the child\'s parents on June 13, 2021, six days before the child\'s death, in which the child could be seen lying on a pillow. It was necessary to determine whether the child in this video already had an unnatural head circumference. This study presents a novel workflow that demonstrates how to analyze and deal with low quality video to answer questions like the above. The workflow demonstrates the creation of 3D scenes from digital image and video material. These 3D scenes can be used for object measurement and to support forensic and medical investigations. In the present case, where only low quality smartphone images were available, the presented workflow was used to create a 3D scene of the child lying on the pillow. In this 3D scene, it was possible to determine the child\'s head circumference. These measurements support the findings of the medical examiner (dated June 24, 2021) and confirm the suspicion that possible child abuse had already taken place on June 13, 2021. The innovative approach makes it possible to identify evidence of possible abuse based on a specific point in time, in this case the child\'s private footage. It also demonstrates the potential of 3D scene reconstruction in complex forensic and medical scenarios.
摘要：
作为全面分析的一部分，本案例报告提供了一个可能的儿童虐待案例，可以作为法医和法医调查的基础。此案涉及一名大约两个月大的婴儿的死亡。在2021年5月底儿科医生的常规检查中，发现孩子的头围正常为31厘米。没有发现其他异常。2021年6月19日，孩子去世，尸检显示头围为44厘米，硬膜下血肿是死因。出现了关于谁可能虐待孩子以及何时虐待孩子的问题。唯一的证据是孩子的父母在2021年6月13日，也就是孩子死亡前六天拍摄的低质量手机视频，可以看到孩子躺在枕头上。有必要确定该视频中的孩子是否已经有不自然的头围。本研究提出了一种新颖的工作流程，演示了如何分析和处理低质量视频以回答上述问题。工作流程演示了从数字图像和视频材料创建3D场景。这些3D场景可用于对象测量并支持法医和医学调查。在目前的情况下,只有低质量的智能手机图像可用，所呈现的工作流程用于创建孩子躺在枕头上的3D场景。在这个3D场景中，可以确定孩子的头围。这些测量结果支持体检医师的发现（日期为2021年6月24日），并证实了2021年6月13日可能发生的虐待儿童的怀疑。创新的方法使得有可能根据特定的时间点确定可能滥用的证据，在这种情况下，孩子的私人镜头。它还展示了3D场景重建在复杂的法医和医学场景中的潜力。
