Showing papers on "Image conversion published in 1994"

Image processing apparatus that can provide image data of high quality without deterioration in picture quality

Abstract: Digital image data obtained by A/D converting an output signal from an image sensing device by an A/D conversion circuit is converted into image data corresponding to a predetermined image format by a digital process of an image conversion circuit Therefore, an image of higher quality without deterioration in the picture can be provided in comparison with the case where digital image data obtained by A/D converting an output signal from an image sensing device is first converted into analog video data and then into A/D data Further format conversion can be performed using a series of controllable image converters The image converters and a signal processing unit can be selectively programmed to perform a variety of format conversions and image-type specific signal processing, respectively Programming can be performed manually or automatically according to the type of input device or the type of information in the image

Bitmap block transfer image conversion

Abstract: The speed of bitmap block transfers involving image transformations between source and destination bitmaps is increased by forming a mapping array with entries corresponding one-to-one to elements of destination bitmap scan lines. A preprocessor fills the entries of the mapping array with indices of elements in a source scan line that map according to the image transformation to the elements of a destination scan line that correspond with the array entries. A block transfer compiler can then generate code to perform the transfer which uses the mapping array in an indexed look-up operation to determine the source element to transfer to each element of each scan line of the destination bitmap.

Image conversion process and apparatus

Abstract: A process for transferring images from a first frame system to a second frame system is described. A first sequence from the first frame system is determined so as to include a plurality of image frames, wherein each image frame includes a central timing factor. Likewise, a second sequence from the second frame system is selected so as to include a plurality of image frames, wherein each image frame includes a central timing factor. Each image frame for the newly constructed second frame system is built by combining at least two image frames from the first frame system in a proportion such that the central timing factors of the two image frames of the first frame system combine so as to correspond to the central timing factor for the image frame in the second frame system. In this manner, the images from the first frame system combine in a smooth fashion in the second frame system such that jitter, freezes and jumps are eliminated. This image transfer process may be used to transfer images between the following frame systems: NTSC TV; PAL TV; Film 16; Film 24; Film 60 (Showscan system); and Computer images.

Image convertion method

Abstract: An image conversion method using an algorithm for scaling rasterized images in both the horizontal and vertical direction. Non-integer remainders of multiplication functions are incorporated into the conversion process to provide highly accurate conversion results. The process provides expansion or contraction of the image in a best fit mode in order to provide the ideal amount of scaling to coincide with the physical requirements of the output device. In addition, conversion with maintenance of the aspect ratio of the original image can be effected with highly accurate image reproduction results.

Processing method and system for digitized image mark

Abstract: PURPOSE: To provide a method and a system with which a code is encoded into digital image, this image is monitored and it is judged whether that image is derivated from the encoded image or not. CONSTITUTION: These method and system are provided for embedding a code into the visible image of both digital display and print or film. The code is embedded into the visible image so as not to be separated, and continuously exists even when performing size change or image conversion such as conversion to the print or film and reconversion to a digital form. A code point is selected among the pixels of original image, the code point and the pixel values of pixels around that point are adjusted just for quantity detectable for a digital scanner, this adjusted code point forms the digital code and this is stored for identifying the relevant image derivated from the image later. The code is embedded into the image by searching relatively extreme values in the continuous space of pixel values and selecting the code point among these values.

Image conversion apparatus having scanning mechanism and optical system on single base

Abstract: An image conversion apparatus for converting an image recorded on an original into an electrical signal upon reception of illumination light transmitted through the original, includes a moving device for mechanically moving the original while holding the original, an optical device for focusing the illumination light transmitted through the original on a focal plane as an image, and an image sensor device for converting the image focused on the focal plane into an electrical signal. The moving device and the optical device share a single base, and a shielding device for preventing a lubricant from being scattered from the moving device to the optical device is formed between the moving device and the optical device.

Three-dimensional image conversion method

Abstract: PURPOSE:To artificially convert a two-dimensional image into a three- dimensional image. CONSTITUTION:One of both two-dimensional signals received from an input terminal 1 is supplied to a lin memory 3 and a field memory 2 respectively, and the other signal is supplied to a 1st selection circuit 7. A CPU 6 controls the number of delay fields of the memory 2 based on the motion vector of a motion vector detection circuit 5 and also decides an input animation or an input still picture. Then the CPU 6 selects the output of the memory 2 for the animation and selects the output of the memory 3 for the still picture respectively. A 2nd selection circuit 8 selects an input two-dimensional image signal or an input delay signal to output it to the output terminals 9 and 10 based on the direction of the motion vector.

Stereoscopic video image display device

Abstract: PURPOSE: To convert a 2-dimension video software into a 3-dimension video image software in a simulating way without the need for a specific eyeglass and producing an exclusive 3-dimension video image software. CONSTITUTION: A composite video signal received by a video circuit 5 is subjected to video image processing to convert it into a 2-dimension video signal and then it is fed to a stereoscopic video image conversion circuit 6, in which the 2-dimension video image video signal is converted into a 3-dimension video image signal. The 3-dimension video image signal from the stereoscopic video image conversion circuit 6 and the 2-dimension video image signal from the video image circuit 5 is switched by a 2D/3D changeover circuit 7 and the switched signal is displayed by a display means 8. In an audio signal system, a pseudo stereo audio signal or a stereo signal is generated from a monaural audio signal received by a multiplex demodulation circuit 9. An audio changeover circuit 11 selectively switches the audio signals. The switched signal is outputted from loudspeakers 10R, 10L via an amplifier means 12 whose gain is varied with a CPU being a component of the stereoscopic video image conversion circuit 6. COPYRIGHT: (C)1995,JPO

Method and device for inspecting pattern

Abstract: PURPOSE:To perform highly reliable inspections by comparing an inspecting image with a reference image after the very small deviation, etc, of a circuit pattern is removed from the reference picture based on a discordance part obtained when the inspecting image is compared with the reference image CONSTITUTION:A video camera 120 picks up the image of a printed board and sends image signals to an image inputting section 130 and the image signals are stored in an inspecting image memory 140 as an inspecting image signals are A/D-converted A designed-image generation circuit 160 reads out the corresponding design data stored in a design data storage device 150, generate a defect-free gradation image, and stores the image in a designed-image memory 170 as a reference image A gradation comparison circuit 180 reads out both the inspected and reference images and generates a discordant image by finding the gradation difference between both signal values Then an image conversion circuit 190 corrects each wiring pattern in the reference image based on various information about the discordance image A defect detection circuit 200 detects points with signal values higher than a prescribed threshold by comparing the signal values of discordant pixels of the inspecting image and corrected reference image with the threshold

Image transmitter and image processor

Abstract: PURPOSE:To inform that an original image is colored by adding a message showing that the original image is a color image in the case of transmission with conversion from the color image to a non-color image. CONSTITUTION:The color image to be transmitted is read from a hard disk 36 and transferred to an image conversion circuit 14. In the conversion circuit 14, an inside color/monochromatic conversion circuit 50 converts the inputted color image data to monochromatic image data. Next, an image synthesizing circuit 54 synthesizes a message image (c) stored in a message memory 52 to a monochromatic image (b) from the color/monochromatic conversion circuit 50. Thus synthesized image is stored in the hard disk 36 for transmission.

Radiation image conversion panel and radiation image recording and reproducing method

Abstract: PURPOSE:To obtain a new radiation image conversion panel and enable recording and reproducing of the radiation image by using a fluorescent body including alkali metal element having a specific composition, rare-earth element and fluorine. CONSTITUTION:A fluorescent body expressed by M Ln3 F10:aAc is used (where M is at least a kind of alkali metal element selected among a group of Li, Na, K, Pb and Cs; Ln is at least a kinds of rare-earth element selected among a group of Y, La, Gd, Yb and Lu; and Ac is at least a kinds of rare-earth metal selected among a group of Eu, Ce and Tb; and is a value in the rage of 0<0.2). The radiation generated 11 from a subject 12 goes in a radiation image panel 13 and absorbed in stimulation luminescence layers in the panel 13. When electromagnetic wave in the wave length range of 450 to 800mm is irradiated to the panel 13 using the light source 14, the cumulative image of the radiation energy is radiated as accelerated luminescence. This image information is photoelectro converted 15 and the image is reproduced 16 and displayed 17.

Method of and apparatus for image processing using a variable focal spot size

Abstract: A method of and apparatus for the non-destructive inspection and/or evaluation of materials by the computer processing of images produced on/by an image conversion screen/device is disclosed in which the images are produced by placing the object to be inspected and/or evaluated between the screen/device and a source of x-rays from an x-ray machine having the capability of varying its focal spot area size. Two images, one created with a large focal spot size and one created with a small focal spot size are processed and then combined in such a manner so as to accentuate the fine structure detail in the resulting image.

Image processing system and image converting method

Abstract: PURPOSE: To provide an improved image processing system and image conversion method by using filtering so as to convert a medium tone image subjected to screen processing or a medium tone image not subjected to screen processing into a continuous gradation image having more excellent edge preservation. CONSTITUTION: The image processing system 10 adopts the sigma filter algorithm to provide the improved image conversion by the improved edge preservation smoothing. The image conversion is executed by the repetitive sigma filter procedure for each repetition using, preferably different filter parameters. Since this algorithm requires no information with respect to a screen characteristic of a converted image, this algorithm is suitable for a medium tone image without a screen structure, that is, an error spread medium tone image or a medium tone image scanned under a low resolution.

Silver halide color photographic sensitive material and manufacture of color proof

Abstract: PURPOSE:To manufacture the color proof improved in approximation to a print in image quality, such as hue and dot image reproduction performance, without lowering operation efficiency in the case of producing the color proof from dot image information obtained by color separation and dot image conversion by using the silver halide color photographic sensitive material. CONSTITUTION:The silver halide color photographic sensitive material has a layer mainly forming a yellow image, a layer mainly forming a magenta image, and a layer mainly forming a cyan image, and it has at least one combination of optional first and second layers among these 3 layers in which when the first layer is exposed to the exposure quantity as much as 1/10-10 times that giving an image density of a minimum density +0.2 to the first layer and developed, the image density of the second layer is smaller than that after development when it is not exposed, and reflection densities in 450, 550, and 700nm are each >=0.8, and the color proof is produced by using this photosensitive material.

Burr detecting method of o-ring packing form article

Abstract: PURPOSE:To detect burr automatically in a highly accurate manner without entailing any registration of a nondefective image or precision positioning by carrying out the exclusive OR operation on an image subjected to morphology processing and an image after labeling. CONSTITUTION:An inspected part 2 (O-ring packing) on a conveyor belt 1 is irradiated by means of reflected illumination, photographed with a camera unit 4, and it is taken into an image processor 5 which perform binary coding, on this taken-in image into and this coded image is subjected to labeling for image conversion. Next, the secured image is made into Morphology processing, and it is subjected to logical calculus between images (exclusive logical OR) together with the image after the labeling, thereby detecting any burr in the inspected part 2. Detected data are inputted into a controller 6, and in the case where this burr is so judged that it is to be eliminated, a discharger 7 and a defective recover 8 are operated, thus all defectives are eliminated.

Image editing processor

Abstract: PURPOSE:To efficiently and speedily perform editing processing by converting resolution, gradation or color space corresponding to the characteristics of an output device before an input image is edited. CONSTITUTION:An image is read by an image scanner and stored in an image storage part 11 as image data. When the characteristics of the stored image data such as the resolution, gradation and color space are not coincident with the characteristics of the output device to be selected by an output device selection part 15, corresponding to the characteristics of the output device, the image data are converted by an input image conversion part 12. On the other hand, processing contents corresponding to the image data instructed from a keyboard or a mouse are stored in a processing storage part 13. The processing stored in the processing storage part 13 is performed to the image data converted corresponding to the characteristics of the output device by an image editing processing part 14, and those data are outputted by a display 16 or a printer 17 selected by the output device selection part 15.

Color registering device for press

Abstract: PURPOSE: To place each color of a printed image into registration by controlling a print controller based upon a comparison of printed color densities and the reference color densities. CONSTITUTION: A control system includes an imaging device 36, a processor 32 and image conversion circuits coupled to the processor and detects color misregistration. The conversion circuits convert these signals to signals usable by the processor 32 and color densities of various colors within the image are compared with reference color densities stored in a memory of the processor. Based upon the comparison of the color densities derived as a result of scanning the printed web 12 and the reference color densities, the processor 32 operates to produce registration offset values between the printed colors which are used to control a print controller 30, which controls print units 14, 16, 18 and 20 such that the colors of the printed image are placed into registration.

Position detecting device for recognition mark

Abstract: PURPOSE:To eliminate an error factor from a position detecting process and ensure the high accuracy of position detection by converting the photographed image of the recognition mark of a measurement object to a binary coded image, and obtaining the center of gravity thereof within the specified range. CONSTITUTION:The recognition mark of a measurement object is phototographed with a camera 1, and the image thereof is converted to a binary coded image via a binary coded image conversion and processing means 2, and introduced to the first rectangular zone gravity center operation and processing means 3. Also, the first rectangular zone setting and processing means 4 for determining the first rectangular zone is connected to the means 3. In this case, X-Y coordinates showing the gravity center position of the binary coded image within the first rectangular zone are outputted from the means 3 and inputted to the second rectangular zone shift processing means 5. This means 5 obtains the second rectangular zone via the second rectangular zone setting and processing means 6, using the inputted X-Y coordinates as a median. Furthermore, the X-Y coordinates showing the gravity center position of the binary coded image in the second rectangular zone are outputted from the second rectangular zone gravity center operation and processing means 7, as a position detected for the recognition mark.

A low cost package for the analysis of human body kinematics

Abstract: The application of the analytical methods of Classical Mechanics has made possible the modelling and quantification of relatively simple motional situations. Only recently, however, with the development of computer integrated systems of kinematic data acquisition and processing, has this branch of Biomechanics acquired a lively momentum. The data for the study of the kinematics of human movement has essentially been obtained with techniques of goniometry, accelerometry and cine- and videophotogrammetry and then processed to provide information on the time histories of the co-ordinates of representative points on the surface of the body. This processing can be done automatically by data acquisition systems such as the Peak Performance, the Elite Motion Analyser, the MacReflex System Motion Analysis System and the Ariel Performance Analysis System (APAS), systems which are, however, far too expensive for the great majority of the researchers and field workers. We have developed a simple and portable PC computer software package which provides facilities for image processing such as the use of several filtering and zooming schemes, image conversion, as well as adjustment of brilliance and contrast. The images are recorded with a video camera and stored frame by frame on disc with a frame grabber and are interactively edited for processing. The image resolution may vary from 800 x 600 pixels with 65 536 colours to 1024 x 768 pixels and 256 colours. The package also includes the means for the acquisition of the co-ordinates of relevant marker points on the body segments and for their export to another package we have developed (Ferreira & Correia da Silva. 1991) which is capable of quantifying the kinematics of the body movement as well as of simulating alternative segment trajectories. Reference: Ferreira. C. & K.Correia da Silva(1991). "John- a Three- Dimensional Model for the Simulation of Human Movement". Proc. First Congress on Computer Science and New Technologies, Malaga.

Method of input image conversion

Abstract: PURPOSE: To convert low resolution input images to high resolution input images CONSTITUTION: The resolution of images is doubled by an image doubling means 26 and doubled images are repeatedly smoothed The doubling and smoothing are repeated until intermediate images are provided with the resolution larger than the desirable resolution of output images After generating such intermediate resolution images, the intermediate resolution images are lowered to the desirable resolution Pseudo gray scale images are generated by a pseudo gray mapping device 34 from the intermediate resolution images and then, the pseudo gray images are processed so as to improve image quality further, converted to true gray scale images or binary images provided with the desirable resolution in a gray scale image generator 36 and printed in a printing engine 40

Virtual reality equipment

Abstract: PURPOSE:To provide the virtual reality device which generates moving and still picture images in precise all visual field directions at a high speed. CONSTITUTION:This virtual reality device is equipped with an image input part 6 for inputting an image of conformal projection or cylindrical projection, an angle input part 5 for inputting information on a visual field direction from a visual field direction sensor, image conversion parts 8, 9, and 10 which maps the inputted image on the basis of the information on the visual field direction to generate an image viewed from the center of a sphere in the visual field direction, and an image output part 7 which outputs an image after conversion.

Color facsimile equipment

Abstract: PURPOSE: To minimize deterioration in an image by image conversion by recognizing a parameter relating to the image quality of color image information of a receiver side, applying image conversion to the color image information and sending the converted information. CONSTITUTION: A quantization section 7 quantizes the arithmetic operation result of a DCT based on a table designated among plural quantization tables, a Huffman coding section 8 implements Huffman coding as the result of quantization by the quantization section 7 by utilizing number of consecutive zeros. Then a transmission document of the sender side facsimile equipment at the sender side is stored by using a resolution, a subsampling ratio and using a quantization parameter and the stored document is image-converted and sent depending on the comparison result between the parameter and that of the receiver side facsimile equipment. Thus, even when the receiver side having no characteristic of document reading stored in the sender side and converts the image for calling, the image deterioration by the image conversion is minimized. COPYRIGHT: (C)1995,JPO

Special image effect device

Abstract: PURPOSE:To improve efficiency, to surely perform motion detection and interpolation with high accuracy, and to obtain a device from which a video signal with high quality can be obtained at a low cost by sharing an image conversion processing part. hardware, and software by a field frame conversion part and a motion detecting part for it. CONSTITUTION:Field frame conversion processing is performed at an image processing part 14 provided at the rear stage of an image storage part 12. Therefore, processing data quantity at an anti-aliasing filter 11 at the front stage side of the image storage part 12 can be prevented from increasing. Also, the motion detection of image data read out from the image storage part 12 is performed by the motion detecting part 13, and also, memory required for motion detection is shared with the memory required for image conversion by performing the field frame conversion processing and interpolation processing by the image processing part 14, which reduces memory capacity. Furthermore, arithmetic processing can be summarized by performing the field frame conversion processing and the interpolation processing at the image processing part 14.

Negative film image conversion apparatus for video camera

Abstract: A negative film image conversion apparatus for a video camera which is capable of obtaining an image of the same color and luminance as those of a real image upon shooting of a negative film as well as a general object. The negative film image conversion apparatus comprises a signal processor for obtaining a luminance signal and a plurality of color difference signals from an image signal inputted therein, a subtracter for subtracting the luminance signal from the signal processor from a predetermined reference signal, inverters for inverting the plurality of color difference signals from the signal processor, individually, and an encoder for combining output signals from the subtracter and the inverters and outputting the combined signal as a composite video signal.