Showing papers on "Channel (digital image) published in 1986"

Programmable system for acquisition and rapid visual display of a high-resolution image

Abstract: The invention relates to a programmable system for acquisition of a high-resolution image. The system comprises image capture means 1 and visual display means 2, allowing visual display of the images. It includes means 3 for calculating and controlling the visual display and image capture means, which are interconnected by means of a stand-alone intermediate circuit 4. The intermediate circuit 4 is intended to provide at least three separate operating modes: a direct-access acquisition operating mode, the calculating means 3 being stopped, or in interrupt mode, a second operating mode for processing the image to be visually displayed, in which the control or calculation means 3 are put into direct access with the memory-stored digital data via a first interconnection channel 40, and a third operating and visual display mode, with the calculating and control means 3 being put into direct access with the visual display means by means of a second interconnection channel 41, the first interconnection channel 40 allowing continuous transfer of the data to be visually displayed to the visual display means 2. Application to the analysis of images in bacteriology and to counting bacterial or cellular colonies, in the farm produce field, for pattern recognition.

New technologies in dual channel read-out registers for high-density CCD image sensor

Abstract: New technologies has been developed for dual channel read-out registers. The mechanism for fixed pattern noise, associated with charge transfer between two horizontal CCD registers, has been clarified and optimum design has been proposed. Furthermore, a new dual channel read-out technique has been developed.

System for transferring three-dimensional tv images

Abstract: A system for transferring three-dimensional TV images comprising means (14) for taking out image signals for either the left image or the right image of three-dimensional TV, means (22) for finding a differential signal between the left image signal and the right image signal for the left and right images, means (27, 28, 29, 30) for effecting the sub-Nyquist sampling of the differential signal according to a frame period related to a limit frequency of three-dimensional vision in the direction of depth of perception, means (36, 42) for synthesizing and sending one image signal and the sampled differential signal, means (50) for separating the one image signal and the differential signal from the synthesized signal that has been transmitted, means (56, 58, 60) for determining the movement between the frames concerning the one image signal that has been separated, means (62, 64) for performing the interpolation between the frames for the separated differential signal depending upon the result of movement determination, and means (66) for synthesizing the one image signal that is separated and the differential signal that is interpolated between the frames, thereby to obtain the other image signal of the left and right image signals. The frequency band occupied by the motion picture being compressed, the high-frequency components of differential signals can be transferred over an ordinary TV signal band of one channel, which are difficult to transfer when the differential signals are simply compressed.

Color detecting circuit

Abstract: PURPOSE:To reduce the influence on another colors on the basis of a specific color correction by correcting a specific color or an intermediate color by the previously defined amount when a single color with 100 percent of saturation or an intermediate color consisting of two colors is compensated or emphasized. CONSTITUTION:When a color detecting circuit 10 capable of detecting a specific color such as the red color with 100 percent of saturation is provided in a color correction system of image processing, the system is constituted by the first maximum value detecting circuit 10A to which the three primary color signals SR to SB are supplied, the second maximum value detecting circuit 10B to which the two primary colors SG and AB are supplied except the red signal SR, and a subtractor 12 to which the first and second color detecting output S1 and S2 obtained from the above circuits are supplied. Then the subscribed output S0 is used as a specific color detecting output to control an R channel. The specific color detecting output S0 takes the maximum level for red color as shown by an arrow in the figure and, only when the red signal with 100 percent of saturation is supplied, the color is emphasized or relieved.

Arrangement for storing an image pattern in a digital memory.

Abstract: The analog video signal of a video camera (1) is conducted to the input of a comparator (2) and digitised with the aid of a reference signal generated by a reference level generator (3). The digital video signal is transferred into a digital memory by a memory access logic (5). Clocking and synchronising the transmission with the acceptance of the image is effected by an activation logic (4). A microcomputer (6) sets the clock frequency, the colour channel and the reference signal. A space-saving storage of the image pattern is achieved with little technical expenditure.