Effect of reference intensity ratio to object on reconstructed image quality in digital holography

In order to improve the accuracy and speed of image reconstruction, the generalized linear reconstructing algorithm based on homomorphic signal processing was analyzed by combining theoretical analysis and experimental verification in the digital holographic microscopy. The experimental results of the same field under different reference intensity ratio to object were compared. The results show that: with the increase of the intensity ratio, the reconstruction image quality of the generalized linear reconstructed algorithm is improved obviously. However, the reconstructed image quality decreases when the ratio increases to a certain value. Finding an appropriate ratio is important for obtaining high quality reconstructed images for the generalized linear reconstruction algorithm in digital holography.