JPEG Pleno holography: scope and technology validation procedures

Abstract

JPEG Pleno is a standardization framework addressing the compression and signaling of plenoptic modalities. While the standardization of solutions to handle light field content is currently reaching its final stage, the Joint Photographic Experts Group (JPEG) committee is now preparing for the standardization of solutions targeting point cloud and holographic modalities. This paper addresses the challenges related to the standardization of compression technologies for holographic content and associated test methodologies.

Transmission of 3D Holographic Information via Conventional Communication Channels and the Possibility of Multiplexing in the Implementation of 3D Hyperspectral Images

“…One reason is the inconvenience of viewers having to use glasses. Sometimes, helmetmounted TV stereo attachments are mistakenly called holographic monitors [17]; they are also inconvenient to use.…”

“…Another relatively economical method of transmitting volume to TV is Pleno technology, well developed by the Joint Photographic Experts Group (JPEG) [17]. In a traditional form, such as with the use of a microlens plate, it is poorly suited for presenting a classic 3D TV signal, since it does not provide reproduction of a large image volume.…”

“…The same group of respected experts has planned work toward the creation of JPEG Pleno, developing a standard that will facilitate the capture and representation of light fields in model of point cloud, similarly to the research in this direction [18] and the works in holographic image modes [17]. Work is actively underway toward saving computer resources when compressing holographic images in JPEG format using deep learning [19] and other methods of saving computer resources when calculating optical transformations [20].…”

“…The conventional method of horizontal and vertical deflection for transferring frame data point by point includes transferring all spatial frequencies of a hologram. With regard to redundancy during direct encoding of a holographic image, when transferring spatial frequencies where all the frequencies are encoded, including those that do not have information about the object for forming a hologram located between ω = Ω and ω = kxsin(θ x1 ) + Ω is not justified, though conventionally this method can be used to transfer holographic information [14,17,35]. The greater the difference between the carrier frequency ω = kxsin(θ x1 ) and its deviation Ω = kxsin(∆θ x1 ) caused by the diffractionlimited beam divergence of the object wave, the more effective the information compression will be.…”

“…Much research has been devoted to comparing the quality of the transmitted image for JPEG compression of flat pictures, which cannot be said about 3D images, although the Joint Photographic Experts Group committee [17] plans for this work to be done. To compare the quality of the volumetric image reconstructed by the hologram, numerical experiments were carried out simulating two transmission algorithms.…”