33results about How to "Suppress image quality" patented technology

This invention provides the following environment. That is, an original document file corresponding to a document to be copied is specified from image data of that document to be copied, and a print process is made based on the specified file so as to prevent deterioration of image quality. Also, when a document to be copied is not registered, a registration process is executed to suppress deterioration of image quality in an early stage. Furthermore, since the document is converted into vector data, re-use of such document is facilitated, and deterioration of image quality can be suppressed even when an image process such as enlargement or the like is made. To this end, when an original digital file cannot be specified, an apparatus of this embodiment executes a vectorization process (S54), converts the obtained vector data into a data format that can be re-used by an application (S55), and registers the converted file in a file server (S56). With this registration process, since the location of the file is settled, that location information is composited on an image to be scanned using an identifier such as a two-dimensional barcode or the like (S48), and the composite image can be printed (S49). Even when the printed document is scanned again, a registered digital file can be easily specified.

An image pickup apparatus for photographing an image, includes: a photoelectric converter to convert incident light an electric charge and accumulate the electric charge, a transfer element to transfer the electric charge accumulated in the photoelectric converter, a converter to convert the electric charge in the photoelectric converter transferred via the transfer element into a voltage, a reset element to reset potentials of the converter, and an amplifier to amplify a voltage converted by the converter to generate a pixel signal and output the pixel signal to a read signal line for reading the pixel signal. A plurality of the photoelectric converter and the transfer element are disposed at least in a horizontal direction share the amplifier and the read signal line.

An image processing device includes a first calculation means for calculating a non-capture color signal corresponding to an H-th interpolation color for a pixel of interest, a second calculation means for calculating a non-capture color signal by multiplying a J-th capture color signal corresponding to the capture color for the pixel of interest by the ratio of the H-th two-dimensional low-pass filter output to the J-th two-dimensional low-pass filter output, and a third calculation means for calculating a non-capture color signal corresponding to the H-th interpolation color for the pixel of interest using the calculation result according to the first calculation means and the calculation result according to the second calculation means.

An image signal is input to two LPFs having different transmission characteristics. A selector chooses one of outputs of the respective LPFs and delivers the chosen output to a gamma correction circuit. The switching of the selector is controlled by a filter control circuit. In the filter control circuit, a comparator compares an exposure time E of a current frame with a threshold value R. The selector is controlled so as to select an output of one of the LPFs that has a lower cutoff frequency and a greater noise component elimination effect than the other LPF does if the exposure time E is longer than or equal to the threshold value R.

An image forming apparatus comprises: a recording head that record dots corresponding to pixels of image data by discharging ink droplets from plural nozzles and discharge, in correspondence to the dots, colorless or light-colored aggregating liquid that causes color material in the ink to aggregate; storage device that stores an image data conversion rule for converting the image data per pixel in accordance with the percentage of the amount of the aggregating liquid with respect to the amount of the discharge ink droplets that record the dots, with the image data conversion rule being determined so that differences in one or both of color and concentration when discharging different amounts of the aggregating liquid onto the dots recorded on the basis of the image data after conversion in accordance with the image data conversion rule become smaller with respect to differences in one or both of color and concentration when discharging different amounts of the aggregating liquid onto the dots recorded on the basis of the image data prior to conversion; setting device that sets the percentage of the amount of the aggregating liquid with respect to the amount of the ink droplets discharged in correspondence to the pixels of the image data; converting device that converts the image data on the basis of the image data conversion rule corresponding to the percentage of the amount of the aggregating liquid set by the setting device; and control device that controls the recording head to record dots in accordance with the image data converted by the converting device and controls the recording head to discharge, in correspondence to the dots, the aggregating liquid of which amount corresponds to the amount of the aggregating liquid of the percentage set by the setting device.

A method for transforming a first data sequence, generated by a first moving picture coding system that switches an intra-frame coding mode and an inter-frame coding mode on a block unit basis to a second data sequence, generated by a second moving picture coding system that switches an intra-frame coding mode and in inter-frame coding mode on the block unit basis. The method includes increasing the number of blocks to be coded by the intra-frame coding mode in the second moving picture coding system when a generated code amount of the second data sequence is less than a target value.

In an inkjet printing apparatus, degraded image quality due to ink viscosity increasing is suppressed without forming ink dots unrelated to the print image as in what is called on-sheet preliminary ejection. More specifically, print data is generated for each pass in a multi-pass printing, such that the ratio of dots continuously formed by the same nozzle during the same scan becomes greater in low-duty areas than in high-duty areas. Thus, the lengthening of nozzle nonuse time can be suppressed, even in the case of printing a low-duty area. As a result, it becomes possible to suppress degraded image quality due to ink viscosity increasing.

An image display apparatus includes: a correction circuit that outputs corrected data based on luminance data designating luminance of display devices, and a modulation circuit that outputs a pulse width modulation signal for driving the display device to the column wiring based on the corrected data. The correction circuit includes: a luminance calculation circuit that calculates luminance including an effect of a voltage drop in the row wiring and an effect of a light emission time of the display device for each predetermined time slot; an accumulation circuit that temporally accumulates the luminance for each time slot; and a corrected data determination circuit that outputs, as the corrected data, a value determined in accordance with the time slot at a time point when an accumulated luminance value obtained by the temporal accumulation reaches a target luminance value.

A correction circuit includes a timing control circuit for dividing a drive period assigned for drive of display devices into plural calculation slots, a luminance calculation circuit for calculating luminance including an effect of a voltage drop for each calculation slot, an accumulation circuit for temporally accumulating the luminance for each calculation slot, a corrected data determination circuit for outputting, as a corrected data, the value determined in accordance with the calculation slot at the time point when the accumulated luminance reaches a target luminance value, and a conversion circuit for converting the corrected data into modulation data to be applied to a modulation circuit. The width of the calculation slot is shorter than the width of the slot for pulse width modulation in at least a part of the drive period. The conversion circuit reduces the bit width of the corrected data by pseudo-gradation processing.

Vertical transfer portions for transferring signal charges from photoelectric conversion portions in a vertical direction and a horizontal transfer portion for transferring them in a horizontal direction are provided, and each of a plurality of vertical transfer stages constituting the vertical transfer portion is provided with a plurality of phases of transfer electrodes. The transfer electrodes at a vertical last stage include independent transfer electrodes (V3R, V5R) for at least two phases, that are independent of the other vertical transfer stages, have identical configurations repeated in a unit of n columns, and are in common among corresponding columns in a plurality of the units of n columns and independent of the independent transfer electrodes belonging to the other columns in the unit of n columns. A signal transfer stage from which the signal charge is read out and a dummy transfer stage from which the signal charge is not read out are formed alternately, the signal charge at the signal transfer stage and a dummy signal at the following dummy transfer stage are mixed together at the vertical last stage and then transferred to the horizontal transfer portion. In the case where a dummy transfer stage is formed for transfer, it is possible to suppress transfer degradation and mix a dummy signal with a signal charge.

A display driver includes an adjustment unit 20 that outputs an electronic volume value based on a detected temperature derived using a temperature sensor 90, a power supply circuit 60 that supplies a drive power supply voltage based on the electronic volume value, and a drive circuit that drives a display panel based on the drive power supply voltage. The adjustment unit 20 outputs a first electronic volume value that sets the drive power supply voltage to a first voltage, in the case where the detected temperature belongs to a first temperature range, outputs a second electronic volume value that sets the drive power supply voltage to a second voltage, in the case where the detected temperature belongs to a second temperature range, and an interpolated electronic volume value that sets the drive power supply voltage to an interpolated voltage that is between the first voltage and the second voltage, in the case where the temperature range to which the detected temperature belongs switches from the first temperature range to the second temperature range.

In a compression method of quantizing and compressing image data of an image, the method comprises the steps of: determining a method of quantization for each pixel; quantizing the image data in pixel unit according to the determined quantization method; storing the quantized image data in a same region of a memory in spite of the quantization method; and storing discrimination data for discriminating the quantization method used for quantizing the image data by corresponding to the quantized image data in the memory.

An information processing apparatus which sends image data subjected to line based wavelet transformation to another device is disclosed. The apparatus includes: a storing means for splitting the image data supplied in units of precincts that are the set of lines to be a unit of processing for the line based wavelet transformation for every frequency component, and storing a plurality of precincts of image data for every frequency component; a packetizing means for reading and packetizing the plurality of the precincts of image data stored by the storing means for each of the frequency components; and a sending means for sending the plurality of the precincts of image data packetized by the packetizing means for each of the frequency components to the another device.

A display device comprises a plurality of island substrates spaced apart from one another and having a plurality of display elements disposed thereon; a lower substrate supporting the plurality of island substrates and the lower substrate being more flexible than the plurality of island substrates; a plurality of connection lines electrically connecting between the island substrates; and a light-transmitting unit disposed on the island substrates and the lower substrate and transmitting light from the plurality of display elements.