Motion adaptive deinterlacer for DMD (digital micromirror device) based digital television

Markandey, Vishal; Clatanoff, T.; Gove, B.; Ohara, K.

doi:10.1109/30.320865

Cited by 20 publications

(4 citation statements)

References 5 publications

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“…These artifacts are particularly objectionable for larger display systems where projection displays find their main application. Progressive-scan conversion is a well-studied field [1,2,3,4,5] with algorithms ranging from simple line repeat to complex variations of motion adaptive interpolation. The basic problem addressed in progressive scan conversion is shown in Figure 2a.…”

Section: Progressive-scan Conversionmentioning

confidence: 99%

“…During the degamma operation, error diffusion can be used as a means of subjectively improving the non-linear digital remapping process. The linearized, progressive RGB data is then reformatted into bit plan level data which is used to drive the DMD display using a Pulse Width Modulation (PWM) technique [1]. The following sections will describe interlace-to-progressive-scan conversion, resampling, picture enhancements, and degamma/error diffusion.…”

Section: Introduction the Digital Micromirror Device (Dmd) Is A Binarmentioning

confidence: 99%

See 1 more Smart Citation

<title>Video processing for DLP display systems</title>

Markandey

Clatanoff

Pettitt

1996

Image and Video Processing IV

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Texas Instruments' Digital Light Processing (DLP) technology provides aM-digital projection displays that offer superior picture quality in terms of resolution, brightness, contrast, and color fidelity. This paper provides an overview of the digital video processing solutions that have been developed by Texas Instruments for the all-digital display. The video processing solutions include: progressive scan conversion, digital video resampling, picture enhancements, color processing, and gamma processing. The real-time implementation of the digital video processing is also discussed, highlighting the use of the Scanline Video Processor (SVP) and the development of custom ASIC solutions.

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Section: Progressive-scan Conversionmentioning

confidence: 99%

Section: Introduction the Digital Micromirror Device (Dmd) Is A Binarmentioning

confidence: 99%

<title>Video processing for DLP display systems</title>

Markandey

Clatanoff

Pettitt

1996

Image and Video Processing IV

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“…Techniques that considered compensation of the motion effect on interlaced images ͑sometimes referred as motioncompensated deinterlacing͒ are designed to convert interlaced images to progressive image format. [3][4][5][6] Most of these techniques use several frames to estimate the field displacement caused by the motion and usually ignore motion blur. When the blur effect is ignored, the motion that occurs only between frames can be determined by the motion displacement vector ͑DV͒, which is the distance between the locations of the same point in two successive fields.…”

Section: Introductionmentioning

confidence: 99%

Restoration of interlaced images degraded by variable velocity motion

Yitzhaky

2003

Opt. Eng

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An interlaced composition of odd and even subimage fields is a very common video formation technique. Motion degradation is an inherent problem in portable imaging systems, such as airborne imaging, mobile phones, robots, etc. When relative motion between the interlacing camera and the scene occurs during imaging, two distortion types degrade the image: the edge ''staircase effect'' due to shifted appearances of objects in successive fields, and blur due to scene motion during each field exposure. In contrast to other previous works that dealt with only uniform velocity motion, here we consider a more general, realistic, and complicated case, in which the motion velocity is not necessarily uniform. The motion in each field and the displacement are assumed to be space invariant. Since conventional motion identification techniques used in other works cannot be employed in the case of variable velocity motion, a new method for identification of the motion from each field is used, and different point spread functions are identified for each field. The restored image is achieved by deblurring each field separately, and then realigning the fields. Results of motion identification and image restoration for various motion types are presented and analyzed for simulated and realdegraded images.

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“…Related and well-known techniques are the motion-compensated-deinterlacing techniques ͑see, for example, Refs. 3 and 4͒ used to convert an interlaced format to a progressive format in applications such as high-definition television, digital micromirror device displays, 5 and multimedia. Even though restoration of an interlaced frame distorted by motion can be regarded as a special case of those techniques, typical motion-compensateddeinterlacing techniques cannot be applied directly to the discussed problem because ͑1͒ they are dedicated for sequence conversion utilizing more than one frame and ͑2͒ in general the motion blur within the fields is ignored.…”

Section: Introductionmentioning

confidence: 99%

Motion-distorted composite-frame restoration

Stern

Kopeika

1999

Appl. Opt.

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Many imaging systems produce pictures by the superimposition of two fields of frames of interlaced sequences. Pictures obtained in this way, which are termed composite frames, are severely degraded if relative motion between the camera and the scene occurs. In the presence of motion the composite frame is affected by two types of distortion: the edge staircase effect that is due to the fact that objects appear at different positions in successive fields and motion blur that is due to scene motion during each field exposure. Motion-deinterlacing methods previously proposed to recover the staircase effect neglect motion blur. However, motion blur may be significant, especially in systems designed for low-intensity radiometric imaging that use long exposures or even in short-exposure systems that happen to be in moving vehicles such as tanks, planes, ships, etc. We introduce an algorithm for the restoration of the two types of distortion in a composite frame degraded by linear uniform motion.

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Motion adaptive deinterlacer for DMD (digital micromirror device) based digital television

Cited by 20 publications

References 5 publications

<title>Video processing for DLP display systems</title>

<title>Video processing for DLP display systems</title>

Restoration of interlaced images degraded by variable velocity motion

Motion-distorted composite-frame restoration

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