In order to solve the problem that it is difficult to accurately control the resources of dumb devices in China Mobile Resource Database, taking the optical splitter as the entry point and the image recognition angle as the breakthrough, the time delay integration (TDI)-likely imaging analysis algorithm for processing outside plate(OSP)is proposed. Firstly, the uploaded images are filtered to ensure the quality of the image data. Then the HSV color space is used to extract the port position and outline, and the image contours are used to filter the noise and the distribution direction of the splitter port. Finally, this paper uses the TDI-likely imaging algorithm to analyze the port occupancy, outputs the port of the optical splitter and gives the split ratio and the occupied port number of the optical splitter, thus improving the data quality of the splitter resource by the resource data platform. Results show that the algorithm runs fast and the port analysis is accurate, so the algorithm has a high application prospect.