Abstract: To provide an exposure device and an image forming apparatus using the same, in which the exposure device can detect light intensity with improved reliability and thereby controls the light intensity with high precision, the exposure device includes an EL (electro-luminescence) element having a first electrode (an anode), a second electrode (a cathode), and a light emitting layer disposed between the first and second electrodes, thereby forming a light emitting unit, and a light detecting element detecting light emitted from the EL element, in which the EL element and the light detecting element are stacked onto each other. The light detecting element is provided at an inner side of a principal surface of the electrode (the anode) which is disposed closer to the light detecting element than the other electrode. A light emitting area of the EL element is provided at an inner side of a principal surface of the light detecting element.

Abstract: To provide an exposure device which is capable of controlling light intensity with high precision by improving reliability of light intensity detection, and an image forming apparatus using the same, an exposure device includes a light emitting device array having a plurality of organic electroluminescence devices 110 arranged on a substrate, a light detecting device 120 that detects light emitted from the organic electroluminescence devices 110, and a light intensity detecting circuit C that processes an output of the light detecting device 120. The light intensity detecting unit C includes a capacitive element 140 connected to the light detecting device 120 and a select transistor 130 that is connected to the capacitive element 140 and draws out charges accumulated in the capacitive element 140. The select transistor 130 and the light detecting device 120 are isolated from each other with the capacitive element 140 interposed therebetween.

Abstract: The invention concerns a light-emitting device comprising an electroluminescent element as a light source and a light-detecting element disposed superimposed on the electroluminescent element for detecting the quantity of light emitted by the electroluminescent element to generate an electric signal for use in the correction of the quantity of light emitted, wherein the light-detecting element has a semiconductor island region AR formed larger than a light-projecting region ALE and the thickness of the light-emitting layer in the light-projecting region ALE is uniform.

Abstract: There are provided an image analyzing apparatus and an image analyzing method where, in analyzing a microscopic image of a microbe or a cell tissue, the manpower-independent observation and quantification are executed so as to enhance the analyzing performance. The configuration of the apparatus and the method is as follows: A frequency conversion processing, such as Wavelet transformation, is executed toward the microscopic image of the microbe or the cell tissue and, based on the result obtained, the quantitative analysis is executed. The configuration allows the automatic quantitative judgement to be executed concerning factors such as the position, the number, the magnitude, the degree of activity, the area ratio, the configuration, the direction, and the color. This condition makes it possible to reduce a burden imposed on a person who are in charge of the observation. Also, the noise can be eliminated, which also enhances the analyzing performance.

Abstract: In an image data processing system, an insignificant space estimation unit predicts a significant/insignificant space in a high-frequency subband on the basis of a low-frequency subband signal in a wavelet space. A deletion unit deletes data in the insignificant space which is predicted by the insignificant space estimating unit. Here, the data is contained in the high-frequency subband. An error-estimation detection unit detects presence of significant data in the space predicted to be insignificant by the insignificant space estimation unit. An adding unit adds to output data a significance attribute indicating that significant data exists in the space detected by the error-estimation detection unit.

Abstract: An image data processing apparatus includes a zero-value prediction compressor for compressing data by predicting a zero-value region of a high-layer from a low layer of a wavelet space and eliminating data in a space other than a meaningful space, a zero-value prediction expander for restoring data after wavelet transform from compressed data with the data in the space other than the meaningful space being eliminated, a subtracter for making a difference between sub-bands, and a differential accumulation buffer for accumulating the difference. In addition, a decoder is provided to have a zero-value prediction expander and a difference accumulation buffer. The decoder predicts a zero-value in a high frequency component to perform mask processing.

Abstract: A polygon drawing system for drawing a polygon at a high speed on such a display as a CRT display for use in computer graphics or the like, while eliminating the need for separating the polygon into triangles, includes a polygon vertex register for previously temporarily storing therein polygon vertex data on a draw polygon, a vertex manager for controllably causing the polygon vertex register to store therein the polygon vertex data under a predetermined condition, a start point register for sequentially monitoring the polygon vertex data being input, determining one of the polygon vertex data to be used as a drawing start vertex and previously temporarily storing the determined polygon vertex data therein, an outline generator for sequentially controlling a sequence of generating an outline of the polygon, a vertex address up counter for outputting to the polygon vertex register an address at which next clockwise polygon vertex data is stored according to the outline of the polygon, a vertex address down co

Abstract: An antialias line generator has a line sequencer for performing axis interpolation, an intension interpolator for performing intension interpolation, and a write axis calculator for producing information about two pixels constituting opposite ends of a line during one machine clock on the basis of interpolation information obtained from the line interpolator and intension interpolator.