Over the last several years, dramatic improvements in technology have brought about a revolution in consumer entertainment. The sources and formats of video have expanded dramatically. At the same time there has been an explosion in the types of devices available for video entertainment, ranging from smart phones and tablets to 1080p Internet-ready Smart TVs. Streaming services like YouTube and Netflix deliver content at various levels of quality. Yet regardless of the content source, viewers expect an immersive, high-definition viewing experience from their home entertainment system.
Marvell's award-winning Qdeo video processing technology delivers consistently high-quality video despite the source. At the core of Marvell's digital entertainment processors, Qdeo uses a suite of "quiet video" technologies to produce video at up to full high-definition 1080p resolution with superb clarity and accuracy. Conventional video processing can actually produce noise and distortion that are distracting on today's high-quality displays. With Qdeo, video from QVGA to 4K×2K is rendered clearer and more natural, without the typical noise and artifacts.
Qdeo video processing can be classified into three main stages:
1. Noise Reduction
Most video material contains analog and/or digital noise. Noise Reduction refers to the process of reducing this noise while minimizing any side-effects. 3D per-pixel motion-adaptive Video Noise Reduction (VNR) completely removes flickering dots from a stationary background and in moving areas without causing side-effects like blurring, ghosting (double imaging) or loss of detail. Per-pixel content-adaptive Compression Artifact Reduction (CAR) removes the block and mosquito noise without causing side-effects like blurring or loss of detail.
2. Format Conversion
Most video material needs to be converted from its original resolution to match the native resolution of the display. 3D per-pixel motion and edge adaptive de-interlacing produces full-resolution in regions where there is no motion and smooth and clean edges for moving objects. Vector Interpolation calculates the direction of the edge to interpolate in that direction, thereby rendering a smooth image without objectionable jagged edges. Qdeo Film Mode does inverse telecine of the film-originated material by identifying the correct film cadence and weaving together the appropriate fields. In addition, Qdeo de-interlacing is able to correctly identify video and film material when they are mixed together—as sometimes occurs in broadcast TV—and handles the content appropriately to avoid the introduction of feathering artifacts in the video content.
Qdeo enhancement is the process of enhancing the appearance of the image by improving the contrast, bringing out the detail, making the colors more vivid, and creating a greater sense of depth. These enhancements can be done once the inherent noise is removed and the image has been converted to the desired display format. Adaptive Contrast Enhancement (ACE) expands details in the shadows without crushing the mid-tones or highlights. Intelligent Color Remapping (ICR) enables vivid colors in outdoor scenes without causing hue shifts or loss of detail or changes in skin tones. It provides the ability to enhance certain colors in the spectrum while leaving other colors untouched. And Natural Depth Expansion (NDE) brings out fine details in textured regions like walls and grass and sharpens boundaries of objects like windows and grills, without introducing side-effects like halos and ringing.
Qdeo video processing technology is a key component in Marvell’s digital entertainment SoCs and digital video format converters. It can be used in a wide variety of applications and platforms, including DTV platforms, Blu-ray players, DVD players, AV receivers, digital projectors, set-top-boxes, and DMAs/networked media clients.
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