A compact, high-performance HDTV camera with four-CCD chips

Fujita, Yoshihiro; Sugawara, Masayuki; Mitani, Kohji; Saitoh, Toshinori

doi:10.1109/11.392835

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…HDR is achieved by using the output of the three-chip camera as the main image and switching to the image from the single-chip camera for the highlight parts. The major feature of the system is that most of the light is input to the three-chip camera, so the signal-to-noise ratio and sensitivity of the output signal basically satisfies the requirements for broadcasting use [7,8]. At the same time, the remaining light is input to the single-chip camera at a low exposure level, so the imaging element has a high saturation level.…”

Section: Optical Systemmentioning

confidence: 99%

Untitled

2015

JEE

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HDR (high dynamic range) imaging has recently been applied to video systems, including the next-generation UHDTV (ultrahigh definition television) format. This format requires a camera with a dynamic range of over 15 f-stops and a signal to noise SN-ratio that is the same as that of HDTV systems. However, current UHDTV cameras cannot satisfy these conditions. We proposed a four-chip capturing method that combines three-chip and single-chip systems. A prism divides incident light into two rays. Most of the incident light is directed to the three-chip capturing block; the remainder is directed to a single-chip capturing block, avoiding saturation. High quality HDR video can then be obtained by synthesizing the images obtained from the two systems. In this paper, we detail this image synthesis method, and analyze the differences between the three-chip and single-chip capturing systems. In particular, we focus on noise analysis of the single chip system. Most of the noises do not affect to image quality but those at around the switching point degrade the visual picture quality. To improve the degradation we propose a new switching method for smooth matching between different noise characteristics of the two systems. Finally, we discuss the results of a simulation used to verify its effectiveness.

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Section: Optical Systemmentioning

confidence: 99%

Untitled

2015

JEE

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Integral imaging system with 33 mega-pixel imaging devices using the pixel-offset method

Arai¹,

Kawakita²,

Yamashita³

et al. 2011

SPIE Proceedings

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Integral three-dimensional television with video system using pixel-offset method

Arai¹,

Kawakita²,

Yamashita³

et al. 2013

Opt. Express

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Integral three-dimensional (3D) television based on integral imaging requires huge amounts of information. Previously, we constructed an Integral 3D television using Super Hi-Vision (SHV) technology, with 7680 pixels horizontally and 4320 pixels vertically. We report on improved image quality through the development of video system with an equivalent of 8000 scan lines for use with Integral 3D television. We conducted experiments to evaluate the resolution of 3D images using an experimental setup and were able to show that by using the pixel-offset method we have eliminated aliasing produced by full-resolution SHV video equipment. We confirmed that the application of the pixel-offset method to integral 3D television is effective in increasing the resolution of reconstructed images.

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A compact, high-performance HDTV camera with four-CCD chips

Cited by 4 publications

References 3 publications

Untitled

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Integral imaging system with 33 mega-pixel imaging devices using the pixel-offset method

Integral three-dimensional television with video system using pixel-offset method

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