摘要:
Input image data is wavelet-transformed into wavelet transformed data. First, second and third quantization values respectively corresponding to the frequency variation, background brightness and edge state of the wavelet transformed data are determined. The wavelet transformed data is quantized by using a human visual quantization value for each region corresponding to the first, second and third quantization values. The quantized data is entropy-encoded to generate compressed image data.
摘要:
The fractal image compression device of the present invention contemplates a control unit for dividing a composite image into a plurality of range blocks and a plurality of domain blocks, classifying the range blocks and domain blocks into several classes according to their respective attributes, and controlling an overall operation of the device. A page memory stores image data received from an external source, and provides output of the image data via control of the control unit. A domain block memory receives first pixel data within the domain blocks from the page memory, and stores the first pixel data via control of the control unit. A range block memory receives second pixel data within the range blocks from the page memory, and stores the second pixel data via control of the control unit. A slope and offset detecting unit spacially-transforms the first pixel data within the domain blocks to correspond one-to-one with corresponding second pixel data within the range blocks, calculates slope and offset values of contractive compression functions corresponding to the spacially-transformed domain blocks and the range blocks, calculates background sensitivities and edge sensitivities from the second pixel data within the range blocks, and calculates and provides output of distortion errors by multiplying brightness differences between corresponding pixels within the spacially-transformed domain blocks and the range blocks by the background sensitivities and the edge sensitivities. An image compression memory stores, as compression data, locations and the slope and offset values corresponding to ones of the domain blocks having minimum distortion errors, via control of the control unit.
摘要:
A fractal image compression method performed in a digital image processing device includes the steps of: dividing image data representative of a composite image into a plurality of range blocks each having a first predetermined size; designating, for each of the range blocks, a plurality of domain blocks each having a second predetermined size, wherein each one of the plurality of domain blocks has a subportion that includes an entire portion of the corresponding range block; calculating coefficients of a contractive transformation function to match a plurality of spacially transformed domain blocks to each range block; calculating distortion errors between the range blocks and their corresponding pluralities of spacially transformed domain blocks; comparing the distortion errors among the spacially transformed domain blocks for each corresponding range block, and selecting a spacially transformed domain block having a minimum distortion error as a maximum similarity block for each corresponding range block; and storing, as a fractal code, a location index and coefficients of the contractive transformation function for each of the maximum similarity blocks.
摘要:
A semiconductor device includes an epitaxial layer of a first conductive type; an anode electrode and a cathode electrode arranged on the epitaxial layer to be separated from each other; a first drift layer of the first conductive type formed in the epitaxial layer; a Schottky contact area at a region of contact between the anode electrode and the first drift layer; an impurity region of a second conductive type different from the first conductive type at the epitaxial layer; and an insular impurity region formed below the Schottky contact area.
摘要:
Provided are a thin film transistor and a method of manufacturing the same. The thin film transistor includes: a gate electrode; source and drain electrodes spaced apart in a up and down direction from the gate electrode and in a horizontal direction from each other; a gate dielectric formed between the gate electrode and the source electrode and between the gate electrode and the drain electrode; and an active layer formed between the gate dielectric and the source electrode and between the gate dielectric and the drain electrode, wherein the active layer is formed of at least two zinc oxide thin layers doped with an element.
摘要:
An air conditioning system, which can automatically remove a malodor generated due to condensate water remaining in an evaporator during a predetermined period of time after operation of an air conditioner or turning-off of the air conditioner and control a filtering mode time of a filter to filter an air. The air conditioning system characteristically comprises a shiftable deodorization filter (30 or 40) located on a flow channel of the cool air passageway and operationally moved to a filtering mode position so as to screen the flow channel of the cool air passageway during a predetermined period of time after an air conditioner is turned on or off, whereby the air passing through the cool air passageway C and a malodor contained in the air are filtered.
摘要:
A method for controlling a multi-sink/multi-path routing sensor network and a sensor network system using the same are provided. The method for controlling the sensor network includes generating, at a sensor node, sensing data; transmitting, at the sensor node, the sensing data to a plurality of sink nodes; and forwarding, at the sink nodes receiving the sensing data from the sensor node, the sensing data to a gateway. Hence, it is possible to satisfy the reliability required in the safety-critical system with the minimum traffic. Both of the two conflicting requirements which are the reliability enhancement of the sensor network and the minimization of the network traffic in the repeated data transmission, can be satisfied adequately.
摘要:
A non-volatile memory device includes a row decoder and a memory cell array. The row decoder generates a read voltage, and first, second and third drive voltages. The memory cell array includes a selected word line receiving the read voltage, a first neighboring word line of the selected word line receiving the second word line drive voltage, a second neighboring word line of the selected word line receiving the third word line drive voltage, and a non-neighboring word line of the selected word line receiving the first word line drive voltage.
摘要:
A device and method are disclosed for processing a data resource changing event in a mobile terminal by recommending a change from a specific, currently used data resource to a new data resource when the data resource has not been changed for a long time. The method for processing a data resource changing event in a mobile terminal comprises storing the data resource changing event occurring in the mobile terminal, confirming a specialist previously set to process the data resource changing event, calling the confirmed specialist to process the data resource changing event, and displaying an avatar and text according to event processing results.
摘要:
A cell string included in a memory cell array of a nonvolatile memory device includes a plurality of memory cells, a string select transistor, and a ground select transistor. The plurality of memory cells are connected in series. The string select transistor is connected between a bitline and the plurality of memory cells, and has a structure substantially the same as a structure of each memory cell. The ground select transistor is connected between the plurality of memory cells and a common source line, and has a structure substantially the same as the structure of each memory cell.