摘要:
For performing high-efficient coding, a coding system comprises:
(a) input means for inputting an input signal (201) to be encoded; (b) a field memory (28, 29) for storing the input signal by dividing said signal into a plurality of fields such as the odd field and even field; (c) predictive signal output means for outputting a plurality of predictive signals predicting the change of input signal corresponded to each signal stored in said field memory; (d) a selector (21) for selecting a predictive signal from the predictive signals provided by said predictive signal output means; and (e) coding means (24) for encoding the input signal using the relationship between said predictive signal selected by said selector and the input signal from said input means.
摘要:
A image coded data re-encoding apparatus for regenerated image coded data for transmission or storing by re-encoding decoded image data according to the present invention comprises an image decoder for decoding image coded data, an object for re-encoding, and an image coder for re-encoding the decoded image data, and corresponds to the configuration of international standardizing system MPEG1. The quantizer (4) executes quantization using decoded parameters for quantization from the variable length decoder (11) and transform coefficient inverse quantized by the inverse quantizer (12). The variable length coder (5) outputs image coded data not decoded by the variable length decoder as it is. The motion compensation predictor (10) predicts motion compensation using motion vectors decoded by the variable length decoder.
摘要:
For performing high-efficient coding, a coding system comprises:
(a) input means for inputting an input signal (201) to be encoded; (b) a field memory (28,29) for storing the input signal by dividing said signal into a plurality of fields such as the odd field and even field; (c) predictive signal output means for outputting a plurality of predictive signals predicting the change of input signal corresponded to each signal stored in said field memory; (d) a selector (21) for selecting a predictive signal from the predictive signals provided by said predictive signal output means; and (e) coding means (24) for encoding the input signal using the relationship between said predictive signal selected by said selector and the input signal from said input means.
摘要:
For performing high-efficient coding, a coding system comprises:
(a) input means for inputting an input signal (201) to be encoded; (b) a field memory (28,29) for storing the input signal by dividing said signal into a plurality of fields such as the odd field and even field; (c) predictive signal output means for outputting a plurality of predictive signals predicting the change of input signal corresponded to each signal stored in said field memory; (d) a selector (21) for selecting a predictive signal from the predictive signals provided by said predictive signal output means; and (e) coding means (24) for encoding the input signal using the relationship between said predictive signal selected by said selector and the input signal from said input means.
摘要:
7 A motion compensation predicting coding apparatus includes a motion detector for comparing pixel data in an image signal with pixel data of the previous image signal to generate a motion vector. The motion vector is indicative of the displacement differences between the image signal and the previous image signal. The image signal may be organized into blocks of pixel data for a single field or for multiple fields when motion detection is performed on the image signal by the motion detector. A subtracter generates a prediction compensation error signal by subtracting the pixel data in the previous image signal from the pixel data of the image signal. A coder receives the prediction compensation error signal and generates an appropriate coded output. The apparatus may also include an adaptive blocking mechanism for receiving the prediction compensation error signal and organizing the data in the signal into blocks into one of several fashions as dictated by the motion vector.
摘要:
7 A motion compensation predicting coding apparatus includes a motion detector for comparing pixel data in an image signal with pixel data of the previous image signal to generate a motion vector. The motion vector is indicative of the displacement differences between the image signal and the previous image signal. The image signal may be organized into blocks of pixel data for a single field or for multiple fields when motion detection is performed on the image signal by the motion detector. A subtracter generates a prediction compensation error signal by subtracting the pixel data in the previous image signal from the pixel data of the image signal. A coder receives the prediction compensation error signal and generates an appropriate coded output. The apparatus may also include an adaptive blocking mechanism for receiving the prediction compensation error signal and organizing the data in the signal into blocks into one of several fashions as dictated by the motion vector.