Showing papers on "Image conversion published in 1988"

Near-infrared-to-visible image conversion using a Si liquid-crystal light valve.

Abstract: A real-time near IR-to-visible image converter using a Hughes silicon liquid-crystal light valve (Si LCLV) has been demonstrated. A 1.06-μm image was converted to a 0.633-μm laser wavelength. The major advantages of this near-IR-to-visible image converter are its high sensitivity, broad bandwidth, coherent- (incoherent-) to-coherent (incoherent) image conversion, up and down wavelength conversion capability, high resolution (>105 resolution elements), room-temperature operation, and high damage threshold.

Color picture recording device

Abstract: PURPOSE:To form excellent picture by applying color correction depending on a color correction parameter corresponding to the kind of recording member with respect to inputted color picture information and applying mirror image conversion as required and forming the image based on the corrected picture signal. CONSTITUTION:A mode selector switch 16 applies mode designation in response to the recording member in use to bring both a mirror image conversion support signal 14 and a color correction parameter change signal 15 into '1' level in the mode where the recording medium is used to print a mirror image from the rear side while observing the picture from a transparent layer 20. As a result, color picture signals 1-3 are subject to mirror image conversion by a mirror image conversion circuit 4 and fed to a color correction circuit 8. A parameter of color correction processing by the color correction circuit 8 is set to a value different from the normal recording medium and corrected so that the color recorded on a recording medium having an ink hold layer 21 and an ink carry layer 22 on the transparent layer 20 is made the same as the color at the recording on a conventional recording member and the same color reproduction as the case with the conventional recording medium is attained.

Composite function generating method

Abstract: PURPOSE:To generate a function which secures continuity for an input that varies discontinuously and dynamically at random by using a multidimensional normal distribution function as the generating function and performing composition by the linear combination of the generating function. CONSTITUTION:Detected distances of sensors 21-2n are converted into relative position coordinates by a coordinate conversion part 30. A control deviation generating part 31 generates the position error between the target position and current position of a robot and the rotational error. An image conversion part 32 converts the input position coordinates and position deviation into a three-dimensional image of the normal distribution by using a basic function and an image arithmetic part 33 adds respective three-dimensional images after image conversion to generate a potential surface in a virtual space. A conversion part 34 computes an attitude controlled variable from the potential value between calculated virtual spaces. A virtual suctional force generation part 35 generates an induction acceleration force and a virtual turning force generation part 36 generates a turning force to a target rotational angle.

Color image recording device

Abstract: PURPOSE:To reduce the degree of luster or the exposure of paper texture in an image and at the same time, permit reproduction of a gradation per color in the same manner by forming threshold matrices per color in such a way that these may have a mirror image relationship between themselves. CONSTITUTION:First a yellow image signal is entered, and then this input data matrix is compared with a threshold matrix (A) for yellow color. The results of this comparison are stored into RAM 14 as an output data matrix to yellow color. Later, a magenta image signal is entered in the same manner, and the threshold matrix (A) for yellow color is subjected to mirror image conversion to form a threshold matrix (B) for magenta color. Next, an input data matrix is compared with the threshold matrix for magenta color, and the results of this comparison is stored into RAM 14 as an output data matrix. After this, the same processing is applied to cyan and black-color image signals, and after completion of the above procedures, an image is recorded by means of a record ing head (PH) using output data in RAM 14.

Manufacture of preprinted drawn can

Abstract: PURPOSE: To simply and surely convert a rectangular document to an annular surface by combining read of image data by a main scan and a sub-scan with regard to the rectangular document, and write of the image data by a circular scan synchronized with the main scan and the diameter direction synchronized with the sub-scan with regard to a plane-like photosensitive body. CONSTITUTION: With regard to a rectangular document 15, read of image data is executed in the main scanning direction and the sub-scanning direction, and the obtained image data is brought to data processing. Subsequently, a plane photosensitive body 10 is opposed to a writing means 16 and by a circular scan synchronized with a main scan and a diameter direction scan synchronized with a sub-scan, write of the image data to a photosensitive body 18 is executed, and a printing plate is generated. In such a way, an annularly developed printing plate can be generated exactly and easily from the rectangular document without executing an image conversion processing. COPYRIGHT: (C)1990,JPO&Japio

Attaining method of stationary image of moving body image

Abstract: PURPOSE:To obtain an excellent stationary image of a moving body image, by a method wherein the amount of stationary control for producing the stationary image is utilized reversely as measuring data on the amount of a swinging or vibrating motion of a moving body. CONSTITUTION:The whole appearance or the like of a chimney 1 is picked up by a TV camera 2 and transmitted 3 and received 4, and a picked-up image thereof is formed in an image plane 7 of TV. One TV provided for monitoring shows a state 6 of the chimney swinging or vibrating actually, as illustrated in a figure (a). In another TV, each picture element is controlled by an internal deflection signal control circuit so that an amplitude, the number of vibrations and a phase be zero in a picture plane 7 respectively, by turning dials 8, 8' and 8'', 10, 10' and 10''... and 11, 11' and 11'' for the horizontal, vertical and oblique directions of each matrix so as to adjust them in a stationary image conversion device 5. Accordingly, the picture plane 7 of TV can be fixed as a stationary image 6' as illustrated in a figure (b), and this stationary image is shown as a clear image of high exactness and high resolution.

Image conversion/color display device from magnetic picture plate to crt screen

Abstract: PURPOSE:To satisfy a desire for drawing and coloring a picture by displaying an image drawn on a magnetic picture plate on a CRT screen by an image conversion device and displaying a specified color on a position of the CRT screen correspondingly to the magnetic picture plate by means of a specified color display device. CONSTITUTION:When an image is displayed on a surface board 5 of the magnetic picture plate 2 by a magnetic pen 1, the image is immediately displayed on the CRT screen 3a by an image converter 3. When a position on the magnetic picture plate 2 is touched with the magnetic pen 1 while depressing any one of color specification buttons 10, a line with the color specified by the color specification button 10 appears on the corresponding position on the CRT screen 3a. Consequently, the desire for drawing and coloring a picture can be satisfied, and hands, cloth or the like are not dirtied at the time of coloring.

Lighting And Accuracy In Machine Vision Inspection

Abstract: This paper discusses some accuracy related problems of a vision inspection system which were studied in developing such a system for a drill inspection. A structured illumination device was designed to obtain high quality image of a drill. The errors in image conversion was studied and it was found that the variation of the illumination intensity changed the dimension of the parts due to the quantization effect of the digital computer. A CCD linear array based light monitoring system was proposed to provide the information about the light distribution of the image. Several possible control schemes upon the output of the monitoring system are discussed.