Multi-resolution image fusion technique and its application to forensic science

Image fusion is a process of combining two or more images into an image. It can extract features from source images, and provide more information than one image can. Multi-resolution analysis plays an important role in image processing, it provides a technique to decompose an image and extract information from coarse to fine scales. In some practical forensic examinations (such as the cartridge image check), we cannot obtain all information from just one image; on the contrary, we need information from images with difference light sources (or light ways). In this paper, we apply an image fusion method based on multi-resolution analysis to forensic science. Synthetic and real images (such as images from closed-up photography and flash photography) are used to show the capability of the multi-resolution image fusion technique.     

Suicide by 120 stab wounds of the chest?

The case history of a suicide due to 120 stab wounds of the chest is presented. The victim was a 41 years old man with a paranoid-hallucinative psychosis. The problem to distinguish homicides and suicides is discussed by the well-known criminalistic and forensic-medical criterias. Induced by this very unusual case the autopsy material with stab wounds was analyzed retrospectively (n = 246, out of about 14,000 autopsies at the Institut of Forensic Medicine in Hamburg). Cases with more than 40 single lesions are normally homicides. However, the pattern of the injuries is more important than the number--especially in doubtful cases.     

Group-specific component imaging from trace material using isoelectric focussing and electroblotting

GC-subtyping was carried out on blood stains, that had been made on glass and stored under room temperature-conditions. Using isoelectric focusing in polyacrylamide gel, followed by transfer to nitrocellulose membrane by semi-dry-electroblotting and detection with enzyme-linked antibody complex the GC-detection was possible even after 64 days. Methodical problems are discussed.     

Descriptive Study of Precursors to Sex Offending among 813 Boys and Girls: Antecedent Life Experiences

In order to understand the precursors to sexual offending among youth and the associated gender differences, the records of 813 sexually abusive children (659 boys and 154 girls) referred for an evaluation of their sexually inappropriate and coercive behavior were reviewed and coded. These children ranged in age from 3 to 18 when they committed their first hands-on offenses. All were under the care of the Massachusetts Department of Social Services either prior to or as a result of their behavior. Principle findings included: (1) a high proportion of girls (19 percent) in a sample of children flagged as sexually abusive to other children, (2) an exceptionally high base rate of severe maltreatment and associated clinical and psychiatric sequelae, and (3) girls were significantly more likely to be sexually abused, and when sexually abused the abuse lasted longer, was more severe, and involved more perpetrators. In addition, the girls were significantly more likely to witness domestic violence and to witness sexual deviance within the home. For all other types of abuse, there were no group differences, and (4) all of the children were subjected to a very high level of caregiver instability.