Generation of non-iterative phase-only hologram based on a hybrid phase mask

Shen, Chuan; Qi, Yifei; Lv, Shiqi; Wang, Bin; Wei, Sui

doi:10.1364/ao.449555

Cited by 8 publications

(7 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The OHPOHs and the ORAP employ the phase mask calculation methods described in Eq. ( 11), while the HOPHs utilizes the hybrid phase defined in Ref (24).…”

Section: Experiments Results and Analysismentioning

confidence: 99%

“…To address the challenge of ringing artifacts, Shen proposed the Hybrid-Phase-Only Holograms (HPOHs) algorithm in 2022 [24], which combines random phase with quadratic phase to form a hybrid phase, leveraging the advantages of both types of phases to improve reconstruction quality and diffraction efficiency. However, this algorithm is still applicable to Fourier holographic systems, and there is still room for improvement in the reconstruction quality.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Generation of Non-Iterative POHs based on Optimized Hybrid Phase for Fresnel Lensless Holographic Projection

2024

Teh. vjesn.

View full text Add to dashboard Cite

Phase-Only Holograms (POHs) are widely embraced for their advantages, including high quality reconstruction and high diffraction efficiency. However, when generating POHs, the utilization of solely random or quadratic phase often leads to speckle noise and ringing artifacts in reconstructed image. To tackle this issue, this paper introduces a non-iterative Optimized Hybrid Phase-only Holograms (OHPOHs) algorithm designed for Fresnel Lensless Holographic Projection system. The proposed algorithm consists of three steps. Firstly, selected quadratic phase and random phase are combined with an appropriate weight coefficient to create a hybrid phase. Next, the hybrid phase is iteratively optimized. Lastly, a complex amplitude is formed by combining the optimized hybrid phase and arbitrary target image, resulting in the generation of POHs through a single-step calculation. Additionally, this paper explores the process of selecting an appropriate weight coefficient for the phase blending procedure. Numerical experiments demonstrate that the non-iterative OHPOHs achieves superior reconstruction of high-quality images by effectively suppressing speckle noise and ringing artifacts. Moreover, this improvement is achieved while maintaining computation efficiency comparable to that of the Optimized Random Phase (ORAP) algorithm and the Hybrid Phase-Only Hologram (HPOHs) algorithm.

show abstract

“…The OHPOHs and the ORAP employ the phase mask calculation methods described in Eq. ( 11), while the HOPHs utilizes the hybrid phase defined in Ref (24).…”

Section: Experiments Results and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Generation of Non-Iterative POHs based on Optimized Hybrid Phase for Fresnel Lensless Holographic Projection

2024

Teh. vjesn.

View full text Add to dashboard Cite

show abstract

“…Non-iterative algorithms [8][9][10] do not require iterating and are suitable for real-time holographic display, making them also a current hot research direction. The random phase algorithm [11,12] is the simplest and direct non-iterative algorithm.…”

Section: Introductionmentioning

confidence: 99%

Iterative phase hologram generation with adaptive weighted constraints for color holographic display

Ding,

Wang,

Wang

et al. 2023

Holography, Diffractive Optics, and Applications XIII

Self Cite

View full text Add to dashboard Cite

Compared with monochromatic holographic displays, color holographic displays have rich depth and color information, which can give observers a more pleasant visual effect. Inspiring by the adaptive weighted GS method, we introduced an optimized iterative method based on exponential weighted constraint to calculate phase-only holograms of color images. After channel separation of the target image to obtain each component image, the input complex amplitude is formed with quadratic phase and iterated. During the iteration, subtract the amplitude of the reconstructed image from the amplitude of the target image to construct an exponential constraint. This exponential constraint is applied to the signal area of the image plane. After calculating the three-channel phase hologram, a color holographic reconstruction can be obtained using the time multiplexing method. Simulated and optical experiments verify the effectiveness of this method.

show abstract

“…The time-integration of holograms with different random initial phase patterns are often employed to reduce the speckle contrast. Numerous detailed discussions of the speckle noise suppression effect have also been contained by many researchers [9,10] . It is important to analyze the influence of the random phase on the image quality of holographic stereogram for a dual-view 3D display.…”

Section: Introductionmentioning

confidence: 99%

The application of optimized phase to generate holographic stereogram for a dual-view 3D display

He,

Wang,

Wang

et al. 2023

Third International Computing Imaging Conference (CITA 2023)

View full text Add to dashboard Cite

Holographic stereogram, as a marriage of holography and multi-view display technique, benefits of these two 3D display technologies. Recent research about the dual-view holographic stereogram 3D display technology shows an attractive way to present the visual information. However, due to the utilization of the random phase to smooth the spatial frequency spectrum, the troublesome of the quality of reconstructed images from holographic stereograms are those images containing speckle noise. In this paper, inspiring by the works about the computer-generated holograms, we introduced an optimized phase for the generation of dual-view holographic stereogram based on integral imaging to get a better suppression effect of speckle noise. The key goal is to determine the complex amplitude employed to calculate the holographic stereogram. Firstly, the pickup process of multiple parallax images corresponding to the left-view field and right-view field are finished by the virtual cameras. Then, the optimized phase is generated by the full-support iterative process, whose phase range is limited in the first time. Next, instead of the random phase, it is combined with corresponding parallax image to yield the complex amplitude. Holographic stereogram plane is segmented into many element holograms and each of them is generated by the Fourier transforming of the above complex amplitude. The phase of each complex element holograms is retained to generated the phase-only holographic stereogram, which have higher diffraction efficiency and no conjugate image than amplitude type holographic stereogram. Finally, the two set of holograms are combined together to reconstruct the corresponding dual-view. The optimized phase as the initial phase is demonstrated by simulations, the comparison of the simulated reconstructions shows that the method of this paper could improve the reproduction quality of the dual-view holographic stereogram, that extended its applicability and practicality.

show abstract

Generation of non-iterative phase-only hologram based on a hybrid phase mask

Cited by 8 publications

References 33 publications

Generation of Non-Iterative POHs based on Optimized Hybrid Phase for Fresnel Lensless Holographic Projection

Generation of Non-Iterative POHs based on Optimized Hybrid Phase for Fresnel Lensless Holographic Projection

Iterative phase hologram generation with adaptive weighted constraints for color holographic display

The application of optimized phase to generate holographic stereogram for a dual-view 3D display

Contact Info

Product

Resources

About