Fig. 1. Flow chart of LLEF algorithm

Fig. 2. Comparison of Canny operator results

Fig. 3. Laplace convolution template

Fig. 4. Flow chart of low illumination enhancement algorithm

Fig. 5. Comparison of grayscale before and after image fusion

Fig. 6. Histogram comparison of original image with image after enhancement and fusion

Fig. 7. Framework for FPGA implementation of LLEF algorithm

Fig. 8. Hardware test platform

Fig. 9. Results of low-light images processed with different algorithms

Fig. 10. Processed results of different algorithms for stage scenes taken by binocular cameras