Fig. 1. GRNet model general architecture

Fig. 2. Change diagram of real frame of infrared the gas leakage

Fig. 3. Visualization of gas leakage candidate box clustering analysis

Fig. 4. Aspect ratio visualization results of candidate frames for gas leak infrared detection dataset

Fig. 5. Mosaic data enhancement

Fig. 6. Gamma transform rendering

Fig. 7. Image enhancement preprocessing schematic

Fig. 8. Fitting diagram of real box and prediction box

Fig. 9. CIoU positioning loss

Fig. 10. Structure of feature extraction network reconstructed by RepVGG module

Fig. 11. RepVGG module structure diagram

Fig. 12. The final test result of the GRNet network model

Fig. 13. Visualisation of ammonia leak concentration distribution

Fig. 14. Visualisation of the overall interface of the infrared gas leak detection system