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

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.

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 means 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 means 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 means 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 means; and control means that controls the recording head to record dots in accordance with the image data converted by the converting means 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 means.

The present invention enables reduction in the amount of data of a document image while maintaining a layout of the document image, and enables suppression of image quality deterioration when reproducing the document image. An original document image is inputted as multivalued image data (original image data) from an image input unit. The multivalued image data is binarized by a binary image output unit. Then, layout analysis is performed based on the binary image data. With respect to text areas, character recognition is performed on the binary image, then the recognition data is outputted. With respect to non-text areas, the binary image data is used without further processing. With respect to a multivalued image, e.g., photographs or the like, the image data is compressed with an appropriate condition and stored.

A printing apparatus which forms dots, according to dot data generated through comparison of a grayscale value of each of pixels with each of threshold values of a dither mask. The printing apparatus forms the dots through division into a plurality of pixel groups having different printing conditions and performs at least a part of the dot formation by the pixel groups in a common region. The dither mask has a second threshold value disposition, with respect to a first threshold value disposition which is each of dispositions of the respective threshold values set such that distribution of dots formed in the common region has noise characteristics having a peak on a high frequency side, in a case where a relative position of the dots between the pixel groups is formed in a target positional relationship which is a target in at least a part of a printing grayscale region.

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.

In a transmitter, a motion detector detects a motion amount of a coded block. A buffer memorizes a detected motion amount. A buffer controller controls the buffer to read the motion amounts in the order opposed to the writing order. A switch selects one of outputs. In a receiver, a sync word detector discriminates first and second sync words. A primary frame memory memorizes an actually decoded image. A secondary frame memory memorizes a predicted image corresponding to the actually decoded image. Memory controllers read out the image information of coding blocks from the corresponding frame memories in an order opposed to the writing order. A switch selects either one of the information of the primary or secondary frame memories.

A first data sequence generated by a first moving picture coding system having an intra-frame coding mode and an inter-frame coding mode is transformed to a second data sequence generated by a second moving picture coding system having an intra-frame coding mode and an inter-frame coding mode. The method includes prereading a coding mode of a successive frame succeeding a present frame from the first data sequence, judging whether or not a preread coding mode of the successive frame is the intra-frame coding mode and determining whether or not to code the present frame by the second moving picture coding system corresponding to a generated code amount of the second data sequence when the coding mode of the successive frame is the intra-frame coding mode. Data coded by the intra-frame coding mode existing in the first data sequence is transformed to the second data sequence.

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.

An electronic watermark embedding apparatus and an electronic watermark embedding method can severally deal with both of the resistance property of an electronic watermark and the prevention of image quality deterioration. Electronic watermark information of a high importance level is embedded in a component having a strong resistance property, and electronic watermark information of a low importance level is embedded in a component exerting little influence on an image quality. As a result, the electronic watermark information to be embedded in the component having a strong resistance property is limited to that of a high importance level. Moreover, the image quality deterioration can be suppressed in comparison with the case of embedding all pieces of information, and the electronic watermark information of low importance level is embedded in the component having a weak resistance property but exerting little influence on an image quality.

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.