Showing papers on "Image conversion published in 1987"

Color image recording apparatus

Abstract: A color image recording apparatus which can form by color correction, a high-quality image on a recording material, with which an image is printed on a back surface of a transparent layer thereof and the printed image is observed from the transparent layer side and can protect an image surface or improve image quality The apparatus comprises input means for inputting color image information; color correcting means for performing color correction of the color image information; converting means for performing mirror image conversion of the color image information; image forming means for performing image formation based on image signals from the color correcting means; and means for changing correcting parameters of the color correcting means and instructing a converting operation by the converting means in correspondence with types of recording materials of the image forming means

Arrangement for optical image processing

Abstract: For electro-optical image conversion as well as for optical image processing by spatial filtering, a two-dimensional optical filter is provided which comprises a microstructured grid, the openings of which are designed as a matrix of windows, the windows being provided with electrostatically movable thin-film closures. The window openings are controlled by electrostatic charges which are provided by an electron beam. This matrix of light valves can preferably be used as a electro-optical converter as well as a Fourier filter in an optical computer.

Movement-Compensated Frame-Frequency Conversion of Television Signals

Abstract: A new method has been explored for improved standard conversion of television signals. The conventional conversion method for the frame-frequency produces a blurring-jerkiness problem and this can be effectively solved by movement-compensated interpolation. An accurate movement estimation and a means to evaluate its accuracy are the two key techniques for achieving this goal and hence are discussed in detail. It is shown that a small frame-to-frame difference does not necessarily imply an accurate estimation. A new accuracy measure is proposed and by using this, the new and the conventional methods are compared. Finally a new movement-compensated interpolation method is described and simulated results are reported.

Dress design forming device

Abstract: PURPOSE:To simplify a dress designing work by mapping pattern data indicating plane display to a three-dimensional body data and displaying the body data. CONSTITUTION:A designer forms body data (DBD) indicating the three- dimensional form of a dress practically worn by a person by using a body data forming part 3, forms a pattern data DKG corresponding to plane display on patterns 12, 22 by a pattern data forming part 2 and inputs the formed pattern data DKG. An image conversion part 4 executes image conversion processing so that plane display on the patterns 12, 22 indicated by the pattern data DKG is mapped on a curved surface BD indicated by the DBD and displays the obtained image data FVD on a display device 42. While observing the display on the display device 42, the pattern data forming part 2 executes graphic design on the patterns to check the graphic obtained when the dress formed based on the patterns 12, 22 is practically worn by a person. Consequently, the design work of the patterns 12, 22 can be simplified.

Monitoring television receiver

Abstract: PURPOSE:To attain a simultaneous monitoring over a wide range and to eliminate the distortion of an image with one TV camera by obtaining plural images geometrically corrected from one sheet of an image. CONSTITUTION:The photographing image of a TV camera 1 is digitized at a sampling circuit 2, and the density value of each point is supplied to a dividing circuit 4 through an A/D conversion circuit 3, being divided into plural images, and by a geometric image conversion circuit 5, they are converted to rectangular images to fit the screen of a CRT monitor 9. And by an image correction circuit 6 and an image smoothing circuit 7, the defect of a converted image is corrected, the image is formed to be almost a natural image, and it is changed to an image signal which can be displayd on the general CRT monitor 9 by a D/A conversion circuit 8, to display it on the monitor 9.

Phase imaging by real-zero conversion and its application to synthetic aperture radar

Abstract: A new method for generating an image of the unwrapped phase is discussed which is based on real-zero conversion of the data. The images produced by this method are of value in reducing the effects of clutter and identifying strong scatterers.

Color image recording method

Abstract: of EP0606926A color image recording apparatus is shown comprising: input means for inputting color image information; and image forming means for performing successively image formation based on image signals generated from said color image information; characterized by further comprising: mode selecting means for selecting a first recording mode in which a normal image recorded by said image forming means is recorded onto a first recording material and a second recording mode in which a mirror image recorded by said image forming means is recorded onto a second recording material; converting means for performing mirror image conversion of said color image information, the conversion being performed when said second recording mode is selected by said mode selecting means; color correcting means for performing color correction of said color image information; and means for changing correction parameters of said color correcting means according to the recording mode selected by said mode selecting means. Furthermore, a color image recording method is shown comprising the steps of: inputting color image information; selecting either a first recording mode in which a normal image is recorded onto a first recording material or a second recording mode in which a mirror image is recorded onto a second recording material in accordance with the recording material; performing mirror image conversion of said color image information when said second recording mode is selected; performing color correction of said color image information; changing correction parameters for said color correcting step according to the selected recording mode; and performing successively image formation based on image signals generated from said color image information.

Image conversion system

Abstract: PURPOSE:To attain the expansion, contraction or scanning conversion of images by a table memory small in capacity even if an expansion ratio is large by independently forming a table for executing expansion/contraction and a table for converting a scanning direction. CONSTITUTION:A table memory 1 for expansion/contraction and a table memory 2 for converting the scanning direction are independently formed and the table memory 2 is accessed by the conversion data of the table memory 1. An image memory 3 such as a line memory storing an original image is accessed by the conversion data of the table memory 2 and image data obtained from the image memory 3 is entered in an output address storing data to be expanded/ contracted. Namely, coordinates for setting up expanded image data are specified by a picture element counter (X axis position) and a line counter (Y axis position), the position of data before expansion/contraction is found out by the table memory 1 and then the position of the original image corresponding to the data is found out by the table memory 2.

Image information conversion system

Abstract: PURPOSE:To save remarkably a memory by processing an image conversion by a buffer memory of a several line portion, without requiring a page memory before conversion. CONSTITUTION:For instance, it will suffice that the procedure of a figure (a) is executed successively in case of magnifying conversion, and the procedure of a figure (b) is executed successively in case of a reduction. When executing the magnification, first of all, when the magnification is executed in S1, a picture element having no data is generated, therefore, its interpolation is executed in S2, and subsequently, a parallel movement of S3 is executed. In such a case, omission of the data is not generated, therefore, only a coordinate conversion will suffice. Next, when a rotation is executed in S4, a picture element having no data is generated by the rotation, therefore, the data of this picture element is interpolated in S5, finally, a converted raster data is written in an output use memory 8. In such a way, with respect to the raster data, conversions such as magnification, reduction rotation, parallel movement, etc. can be processed at a high speed, and also, as for the data before a conversion, a full page memory is not required, and it will suffice that only a buffer memory of several lines is provided, therefore, the memory can be saved remarkably.

Processing method for color image signal

Abstract: PURPOSE:To facilitate conversion processing together with reduction of the deterioration of signals and to edit images in a short time, by applying the image conversion processing to signals Y, I and Q respectively and then synthesizing again those signals to obtain the output image pictures. CONSTITUTION:A signal RGB sent from a sensor 11 for each picture element is separated into a luminance signal Y and color difference signals I and Q by a color converting circuit 13 after A/D conversion 12 and stored in an image memory 14 after the data compression processing. These stored signals are demodulated as signals Y, I and Q for each picture element and converted into the color signals by a color converting circuit 15 in response to an output device 16. While an image editing device 17 gives editing processing to the data of the memory 14 for variable power, etc. and sends the result of this processing again to the memory 14. The device 17 also displays the editing result through a monitor. The signals Y, I and Q undergo each processing and the signals I and Q are magnified by four times for synthesization. Thus the rotary processing is attained for color images.