摘要:
Generation of evaluation value information about a motion vector, extraction of candidates for the motion vector on the basis of the evaluation value information, and determination of the motion vector to be allocated from the candidates for the motion vector are performed. The possibility that a reference pixel a in a second frame is a candidate for a motion from a target point in a first frame is evaluated on the basis of pixel-value correlation information to generate an evaluation value table. A constant area is adaptively set around each of the target pixel and the reference pixel corresponding to each extracted candidate for the motion vector in accordance with the state of the continuity of a constant pixel value. The motion vector from the first frame to the second frame is allocated on the basis of the result of comparison between values calculated for the constant areas.
摘要:
A motion vector detecting apparatus includes an evaluation value information forming unit to form evaluation value information of motion vectors evaluating a possibility that a reference pixel is a candidate motion of a target pixel on the basis of pixel value correlation information between the target pixel in one of frames on a time axis in moving image data and the reference pixel in a search area in another of the frames, perform counting on at least one of the target pixel and reference pixel when a strong correlation is determined on the basis of the pixel value correlation information, and determine an evaluation value to be added to the evaluation value information on the basis of a count value obtained through the counting; a motion vector extracting unit to extract candidate motion vectors; and a motion vector determining unit to determine a motion vector among the candidate motion vectors.
摘要:
An image processing apparatus includes: a blur removing processing section configured to carry out a blur removing process for an input image using a plurality of blur removal coefficients for removing blur of a plurality of different blur amounts to produce a plurality of different blur removal result images; a feature detection section configured to detect a feature from each of the different blur removal result images; a blur amount class determination section configured to determine blur amount classes representative of classes of the blur amounts from the features; and a prediction processing section configured to carry out mathematic operation of pixel values of predetermined pixels of the input image and prediction coefficients learned in advance and corresponding to the blur amount classes to produce an output image from which the blur is removed.
摘要:
A data storage unit is provided in which all data are stored into a memory including a plurality of memory banks and a plurality of desired data is read simultaneously, without any load to the hardware. It includes a memory controlling means including a data storage controller (20), data read controller 30 and data move controller (40), for judging, based on an access pattern representing a plurality of desired data to be read simultaneously when storing data sequentially into the memory with the data being divided among the plurality of memory banks of the memory, whether the data going to be stored are ones at locations corresponding to the access pattern, and storing all data at the locations corresponding to the access pattern into different memory banks by skipping a memory bank in which the data is to be stored, by incrementing its address, when the data to be read simultaneously are ones at the locations corresponding to the access pattern, and storing data at the locations corresponding to the access pattern into the memory bank having the bank address thereof incremented. The memory controlling means provides a control to read a plurality of desired data simultaneously from a memory (10).
摘要:
When all data is stored in a memory composed of a plurality of memory banks, a data division determination section divides all the data into a plurality of data regions. The data in the regions is allocated among the plurality of memory banks, and the data is stored in one word line in each memory bank, so that all the data is arranged in the memory. A memory control section, an address conversion section, and an address generation section perform control for periodically reading a plurality of pieces of data to be simultaneously read in each region from all the data arranged in the memory, sequentially replacing or overwriting with some of the data in the adjacent region, and reading a plurality of pieces of data to be simultaneously read next.
摘要:
A picture encoding apparatus for encoding an input digital picture signal in such a manner that the amount of generated data is reduced is disclosed, that comprises a dividing unit for dividing the input digital picture signal into blocks each of which is composed of a plurality of pixels, a detecting unit for detecting the maximum value of the pixels of each block, the minimum value thereof, and a dynamic range that is the difference between the maximum value and the minimum value, a quantizing unit for quantizing each value of the pixels that has been normalized with the value of the dynamic range, and an additional code encoding unit for generating the difference of the minimum value with the minimum value and a delayed value of the minimum value and for variable-length code encoding the difference of the minimum value.
摘要:
A signal converting apparatus and a signal converting method which predictively produce highly accurate interpolated pixels in accordance with a classification which precisely reflects a variety of signal characteristics of inputted video signals to provide a high resolution video signal. An activity is evaluated and classified for each block of an inputted video signal (S.sub.1), and stepwise classifications are executed on each block of the inputted video signal (S.sub.1) in accordance with an activity code (c0) obtained as a result of the activity classification. In this way, the accuracy of subsequent classifications can be increased, reflecting the activity characteristic of each block of the inputted video signal (S.sub.1), thus achieving, as a whole, a highly accurate classification of the inputted video signal (S.sub.1). Appropriate prediction coefficients (d1) are read based on the activity code (c0) and a class code (c1) for each block of the inputted video signal (S.sub.1) to produce highly accurate interpolated pixels, thus providing a high resolution video signal (S.sub.2).
摘要:
Difference signals generated by the prediction encoding process for an input digital information signal are block segmented and then quantized by an ADRC encoder as a first variable-length-code encoding means. Output data of the ADRC encoder is divided into bit planes by a bit plane encoding circuit. The ADRC encoder varies the number of bits assigned to a block corresponding to a dynamic range DR. A block to which 0 bit has been assigned is detected in each bit plane and data of the block is excluded. The resultant data is encoded by a variable-length-code encoder as a second variable-length-code encoding means and then transmitted.
摘要:
On a decoding side, parameters (minimum value MIN and dynamic range DR) are optimized in such a manner that a decoded error of original signal values and restored values becomes minimum. A maximum value detecting portion 2 detects the maximum value MAX of pixels of each block composed of (3.times.3) pixels. Likewise, a minimum value detecting portion 3 detects the minimum value MIN. A subtracting portion 4 generates a dynamic range DR. A subtracting portion 5 subtracts MIN from each of input pixel values y and generates normalized values. A step width calculating portion 6 calculates a quantizing step width .DELTA. with DR. A quantizing portion 7 generates quantized values x (each of which is composed of 4 bits) with .DELTA.. A least squares method based estimating portion 8 generates decoded values y' with y and x and obtains an optimized dynamic range DR' and an optimized minimum value MIN' in such a manner that the sum of square of an error (y'-y) becomes minimum. A framing portion 11 frames x, DR', and MIN' and records the framed data on a record medium 15 through an error-correction-code adding portion 12, a modulating portion 13, and a recording portion 14.
摘要:
Apparatus and method for processing a digital video signal having an inner block of pixel data that represents an image spatially located within an outer block of pixel data. A class code of the inner block of pixel data is determined in accordance with values of the pixels of both the inner and outer blocks; and coefficient data which corresponds to the class code of the inner block is retrieved from a memory and is used with the digital video signal to generate interpolated data to produce, for example, a high definition digital video signal.