摘要:
In an image data conversion unit, image quality can be further improved as compared with a conventional unit. Prediction data are generated from teacher image data (HD) corresponding to second image data by using a plurality of filters (F1 to F4) having pass-bands different from each other and thereby, the second image data can be generated by using prediction data corresponding to characteristics of first image data, which enables further improvement of image quality as compared with a conventional case.
摘要:
An image of lower spatial resolution is converted into an image of higher spatial resolution efficiently and highly accurately. For such conversion, pixel data is expressed by vectors in a color space of R, G, B, and not only an R component of low resolution but also R, G, B components are used to predict an R component of higher resolution.
摘要:
A signal processor 12 acquires a second signal obtained by detecting a first signal, as a signal of the real world, having a first dimension. The second signal is of a second dimension lower than the first dimension and has distortion relative to the first signal. The signal processor 12 performs signal processing which is based on the second signal to generate a third signal alleviated in distortion as compared to the second signal.
摘要:
An inputted digital signal D10 is categorized into a class according to the envelope of the inputted digital signal D10 and converted by prediction method corresponding to the class. Therefore conversion further adapted to the feature of the inputted digital signal can be conducted.
摘要:
A motion-vector-setting section (31) sets a motion vector in units of pixel in a target image. Based on the motion vector, a target-pixel-setting section (35) sets a target pixel for each image in plural images to be processed. A motion-blur-amount-setting section (33) sets a motion blur amount in units of pixel based on the motion vector and the exposure-time ratio set in units of image in the exposure-time-ratio-setting section (32). A processing-region-setting section (36) sets processing regions corresponding to the target pixel for each of the plural images based on the motion blur amount. A processing-coefficient-setting section (37) sets processing coefficients based on the motion blur amount. A pixel-value-generating section (38) generates motion-blur-removed pixel values that correspond to the target pixel by linear combination of pixel values corresponding to pixels in the processing region and the processing coefficients, so that they can be output from an integration section (39) as one pixel value. By utilizing any time-directional information significantly, motion-blur-removing processing can be accurately performed.
摘要:
An image contracting circuit (1) contracts a supplied original image. An upper-level image memory (2) holds an inputted upper-level image. A prediction tap extracting circuit (3) extracts a prediction tap from the upper-level image stored in the upper-level image memory (2) and outputs it to a mapping circuit (4), prediction coefficient creating circuit (5), and pixel value updating circuit (8). The mapping circuit (4) outputs a predicted image formed by performing calculation of a linear combination of the prediction tap and the prediction coefficient to an error calculating circuit (6). The error calculating circuit (6) calculates the difference (S/N ratio) between the pixel value of the predicted image and the corresponding pixel value of the original image. A comparing/judging circuit (7) controls a nonlinear processing circuit (9) according to the difference. The nonlinear processing circuit (9) adds a predetermined value to the pixel value of the pixel of the updated upper-level image or subtracts a predetermined value from the pixel value depending on the variation of the pixel value updated by a pixel value updating circuit (8).
摘要:
This invention relates to device for processing an image signal that can improve an image quality of a zoom image. Based on input image signal (Vin), an image-signal-processing section (110) produces output image signal (Vout) to display the zoom image with expansion rate of an image being changed consecutively around an arbitrary point specified by the user as a center. Each pixel data of the output image signal (Vout) is calculated by using coefficient data (Wi) produced by the coefficient production circuit (136). The coefficient production circuit (136) produces the coefficient data (Wi) based on not only the phase information (h, v) of each pixel but also the resolution adjustment information (f) and the noise suppression degree adjustment information (g) that the image quality adjustment information generation circuit (140) generates based on expansion rate (T) of the image, change rate (K) of the expansion rate of the image, and characteristics information (DR, MV) of the image.
摘要:
The present invention relates to data processing apparatuses which improve the quality of decoded data, such as an image and sound, more. A decoding section 21 decodes, for example, encoded data obtained by JPEG-encoding an image, and an encoding section 22 encodes first decoded data obtained as a result to output re-encoded data. Further, a decoding section 23 decodes the re-encoded data to obtain second decoded data. A class-classification adaptive processing circuit 24 generates a prediction tap used for a predetermined prediction calculation with tap coefficients obtained by learning, from the first decoded data and the second decoded data, and performs the predetermined prediction calculation by using the prediction tap and the tap coefficients to obtain a prediction value corresponding to master data used as a master in the learning. The present invention can be applied to transfer systems for encoding images and sound to transfer them.
摘要:
An input digital signal D10 is class-classified according to the envelope of the input digital signal D10, and the input digital signal D10 is converted by the prediction method corresponding to the class, so that conversion further suited to the feature of the input digital signal can be performed.
摘要:
A picture reducing circuit 1 reduces a supplied original picture. An upper hierarchical level picture memory 2 stores an input upper hierarchical level picture. A predictive tap obtaining circuit 3 extracts a predictive tap from the upper hierarchical level picture stored in the upper hierarchical level picture memory 2 and outputs the extracted predictive tap to a predictive coefficient calculating circuit 4, a pixel value updating circuit 5, and a mapping circuit 6. The predictive coefficient calculating circuit 4 generates an observation equation using the predictive tap as student data and pixels of an original picture corresponding thereto as teacher data, solves the observation equation, and generates predictive coefficients. The pixel value updating circuit 5 generates an observation equation using the predictive coefficient as student data received from the predictive coefficient calculating circuit 4 and original picture data corresponding thereto as teacher data, solves the observation equation, and simultaneously obtains optimum values of a plurality of updated pixel values corresponding to given coefficients.