title: [Establishment of a mechanical experimental system of biologic tract tissue with auto-measurement based on measuring mark].
abstract: As the core of mechanical experimental system of biologic tract tissue, the automatic measuring program of serial images based on measuring mark could provide two basic parameters for mechanical analysis, namely tissue length and average external diameter. Hybrid programming between VC+ + and Matlab is conducted. Subprogram will be in charge of the processing of single image (color-gray transform, image segmentation, pick-up target area according to measuring mark), while the main program written by VC+ + will orderly call the above subprogram again and again when it is traversing through the image sequence which records the process of a tissue's expansion and constriction under force, so the automatic measure of the serial images and mechanical analysis is achieved. The results showed: the experimental system could avoid the contrived errors caused by naked eye identification and manual choosing measuring area; the measuring precision could satisfy the need of tract tissue mechanical analysis; the system could save time and energy dramatically. The fact of tract tissue accords with the applicable conditions of mechanical analysis theory used in our experimentations.
authors.affiliation: College of Bioengineering, Chongqing University, Chongqing 400044, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Shirong
authors.initials: S
authors.lastname: Xu
authors.forename: Yunpeng
authors.initials: Y
authors.lastname: Wu
mesh_terms: D000465:Algorithms; D001696:Biomechanical Phenomena; D001808:Blood Vessels / Q000502:physiology*; D004548:Elasticity; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional; D011312:Pressure; D014513:Ureter / Q000502:physiology*