Study On The Methods For Flow Simulation Of Erythrocyte Based On Dynamic Texture

Computer simulation technology is widely used in medical education because of its intuitive and controllable characteristics.Erythrocyte is the medium of transporting substances and energy,and many pathological changes can be reflected by the morphological changes of erythrocyte.Therefore,the study on the morphological changes of erythrocyte is the key point of basic medical education.In order to show the flow and deformation of red blood cells to students,it is necessary to simulate the flow and deformation of red blood cells.Most of the previous simulation methods focus on the establishment of the static model of red blood cells,lack of dynamic perception of the flow process.Few studies on the dynamic flow of red blood cells have focused on the simulation of plasma motion.In medical education,it is necessary not only to study the erythrocyte morphology in general,but also to study the changes of the morphology of red cells.In order to meet this requirement,dynamic texture technology is introduced to simulate the flow of erythrocyte.This paper revolves around simulation method to study the related flow of erythrocyte,dedicated to the fulfillment of authenticity and real-time flow simulation of erythrocyte.We regard the following aspects as a breakthrough point to carry out related work.Firstly,study erythrocyte flow under normal and abnormal morphology change.We can realize the erythrocyte modeling of data prepossessing,which establishes the static model of erythrocyte containing deformation information.The Poiseuille equation is used to describe the process of blood flow,and we can use lattice Boltzmann method for the computation so we can get the fluid velocity,determine the location of erythrocyte at various time points,and achieve construction sequence of samples in every case.Secondly,because the flow of erythrocyte can show a certain regularity generally,we adopt dynamic texture technology to realize the expansion of the flow sequence in the space.For the input sequence,the Hungarian algorithm is used to match the input and output,and the K coherence algorithm is used to reduce the matching time and improve the efficiency of the synthesis.According to the matching result,the best result is solved by the least square method.At last,we extend the range of small sample to large scale flow pattern in spatial domain.Furthermore,aiming at the defects that it is Unable to expand the time domain,This paper presents an algorithm for dynamic sequence synthesis based on texture primitives:The sequence is decomposed into texture primitives,Synthesis it according to the statistical distribution characteristics.Due to the unnatural transition between frames,we propose a constrained path algorithm based on dynamic programming and a transition frame synthesis based on constraint addition.This method reduces the noise in total so as to avoid the phenomenon of the visual distortion and smoothing effect sequence,solves the jump phenomenon of traditional simulation methods of vision and enhances the sense of reality.The algorithm is simple and easy to implement.Finally,we establish a system of flow simulation of erythrocyte.The experimental results show that this method can achieve good development of input samples in the space domain,and the time domain,according to the difference of the input sample regularity,frame length expansion although there will be differences,but eventually will be able to achieve development in time.The results of the final synthesis are of authenticity and real-time.It will improve the teaching of the visual sense greatly,and it is helpful for teachers in the teaching process and students in the learning process of fully understanding.