Fig. 1. The mechanical structure of the objective evaluation system of resolution of LLL image intensifier^［11］

Fig. 2. The target image of image tube 150097

Fig. 3. Cropped image 1

Fig. 4. Image rotation result of the target image

Fig. 5. Extraction results of resolution block of three image tubes

Fig. 6. Image preprocessing results of the resolution image block of the three image tubes of Fig. 5

Fig. 7. The unit stripe segmentation result of Fig. 5 （b）

Fig. 8. Image stitching result of three horizontal unit stripes of image tube 150112

Fig. 9. Comparison of ten subjective evaluation results and ten evaluation results of the proposed method of the six selected image tubes