Three-dimensional digitization (3DD) is a technique of recording position data in an electronic format. This process is performed through the use of coordinate measuring machines (CMMs), a broad classification of tools whose purpose is to record position data. This paper introduces 3DD, and describes the operational theory behind a variety of CMMs. Applications for 3DD in the field of traffic accident reconstruction are discussed, as well as the advantages and disadvantages of 3DD over traditional methods. The process of measuring a vehicle with CMMs is presented along with special survey techniques to more effectively use electronic surveying equipment. Lastly, the means of converting recorded data to usable form are described, and a partial list of manufacturers for CMMs and modeling software is provided. (A)
Abstract