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Accelerated multi-tap filter and bilinear interpolator for video compression

A technology of accumulators and tap coefficients, applied in digital video signal modification, image communication, electrical components, etc., can solve problems such as computational complexity

Inactive Publication Date: 2018-03-30
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A well-known problem associated with estimating or interpolating subpixels is computational complexity

Method used

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  • Accelerated multi-tap filter and bilinear interpolator for video compression
  • Accelerated multi-tap filter and bilinear interpolator for video compression
  • Accelerated multi-tap filter and bilinear interpolator for video compression

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Embodiment Construction

[0030] Several aspects of the invention are disclosed in the following description and related drawings directed to specific embodiments of the invention. Alternative embodiments may be devised without departing from the scope of the present invention. Additionally, well-known elements of the invention will not be described in detail or will be omitted so as not to obscure the relevant details of the invention.

[0031] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Likewise, the term "embodiments of the invention" does not require that all embodiments of the invention include the discussed feature, advantage or mode of operation.

[0032] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the invention. ...

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Abstract

A set of even interpolated sub-pixels is formed based on a pixel window and a tap coefficient register with a set of tap coefficients, the pixel window is shifted, and a set of odd interpolated pixels is formed applying the tap coefficient register. The set of even interpolated sub-pixels and the set of odd interpolated sub-pixels are repeatedly accumulated until a termination condition is met. In the accumulation, the tap coefficient register is updated with another set of tap coefficients, the pixel window is shifted, and the even interpolated pixels are incremented, then the pixel window is shifted again and the odd interpolated pixels are incremented Interpolate pixels.

Description

technical field [0001] This invention relates to video compression, and more particularly to multi-tap motion compensation filters and bilinear interpolation. Background technique [0002] The video output from a digital camera is usually a series of frames, each frame being a snapshot produced by the camera's array of rows and columns of optical sensors, often in the millions. Each frame is a time sample of an impact image and thus the rate of frames can be correlated with the highest rate of motion the user wishes to capture. For example, a frame rate of 15 to 30 frames per second captures the fastest motion perceptible to the human eye. Higher frame rates (eg, over a million frames per second) can be used to capture high-speed motion, such as hummingbird wing movements or ballistic events. [0003] However, even at lower frame rates, the amount of data required to transmit and store an image can be problematic if the data produced by the optical sensor is not processed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/82H04N19/523H04N19/433
CPCH04N19/43H04N19/523H04N19/80
Inventor 周博贸·曾俊晨·杜卢西恩·科德雷斯库苏海勒·亚利尔
Owner QUALCOMM INC