While research on the new multi-seeder dynamical testing technology based on image techniques

one of the most important problems is the matching and joining of the serial dynamical images of seed kernels. In this paper

a useful method is introduced to solve this problem. Based on the theory of patter recognition

this method successfully meets the requirement of real-time test. The theory of the building of a testing system is explained

factors that influence the precision of image joining is analyzed and methods used to join the serial images is proposed. A universal test-bed system is expounded that can be used to test the performance of precision seeders

grain drills and seeding monomer. This test bed

which is automatically controlled

can measure the seed kernels interval correctly and reliably. Experiments show that theory and method are practical

speedy and reliable. The requirement of real-time test is satisfied. The test error of the system is within 2mm.