Patent
Device and method for motion video encoding reducing image degradation in data transmission without deteriorating coding efficiency
TLDR
In this paper, a code volume control section refers to an input image and a reference image stored in a frame memory and thereby sets a quantization step for each block so that the volume of coded data generated for a frame will be a preset volume.Abstract:
A code volume control section refers to an input image and a reference image stored in a frame memory and thereby sets a quantization step for each block so that the volume of coded data generated for a frame will be a preset volume. A data loss probability estimation section estimates a data loss probability (the probability that data loss will occur to a target block due to transmission error) based on a code volume predicted value of the target block obtained by the code volume control section and the code volume from the latest synchronization code pattern to a block just before the target block. A degradation estimation calculation section calculates an estimate of degradation of the target block caused by errors based on image degradation power and the data loss probability. A mode selection section selects an optimum encoding mode for the target block based on the degradation estimate of the target block and an estimate of frame coding distortion. Forced refresh (intra-frame encoding of a block) is carried out properly and effectively, thereby image degradation is reduced without deteriorating coding efficiency.read more
Citations
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Patent
Predictive lossless coding of images and video
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Image encoding method and image decoding method
TL;DR: In this article, an image encoding method includes selecting a motion reference block from an already-encoded pixel block and selecting a selection block from the available block, which is then used to generate a predicted image of the encoding target block using motion information of the selection block.
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Recording apparatus, reproduction apparatus, and file management method
TL;DR: In this article, a hierarchical structure consisting of video data and audio data both in the form of compressed data together with information necessary for processing of the video data, audio data is produced and recorded on a predetermined recording medium.
References
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TL;DR: In this paper, an integrated circuit (2210) for use with a first processor (106) off-chip, the following combination: first terminals (of 2232) for first processor related signals and defining a first data width (32-bit), second terminals for external bus-related signals (PCI), third terminals for memory related signals (of 2258), and a DRAM memory controller (2250) connected to the third terminals.
Patent
Method and apparatus for simplifying real-time data encoding
Jeffrey S. McVeigh,Michael Keith +1 more
TL;DR: In this paper, a method for encoding data is presented comprising receiving a stream of data to be encoded comprising a plurality of frames, selecting a frame-type for each of the plurality of frame, and grouping subsets of a plurality based on the selected frame type to facilitate optimal, random access to select groups of frames.
Patent
A perceptually motivated trellis based rate control method and apparatus for low bit rate video coding
Anurag Bist,Sriram Parthasarathy +1 more
TL;DR: In this paper, a trellis having a plurality of nodes is provided, and each of the nodes has an associated quantization parameter and bit number, the bit number associated with each node corresponds to a quantity of bits consumed in reaching that node.
Patent
Method and apparatus for performing real-time data encoding
Jeffrey S. McVeigh,Michael Keith +1 more
TL;DR: In this article, a method for encoding a frame of data is disclosed comprising receiving one or more data frames, low-pass filtering each of the received frames, horizontally subsampling each of filtered frames by a scaling factor, and modifying the subsampled frames to resemble full frames.
Patent
Estimating rate-distortion characteristics of binary shape data
TL;DR: In this article, first and second object shape features are extracted at a first-and second-resolution of the video object to estimate the rate and distortion characteristics of a video object.