Abstract: An image data generating circuit of a color image processing apparatus generates multivalued image data for each color in accordance with density of each color of magenta (M), cyan (C) and yellow (Y). An M-screen threshold value generating circuit outputs a plurality of first threshold values, a C-screen threshold value generating circuit outputs a plurality of second threshold values, and a Y-screen threshold value generating circuit for outputting a plurality of third threshold values. A comparing circuit compares the multivalued image data outputted from the image data generating circuit with the first to third threshold values outputted from the M-, C- and Y- screen generating circuits for each color to output a comparison result in the form of a binary signal. The first and second threshold values is assigned to each pixel of an M multi-cell and a C multi-cell constituted by square matrixes having screen angles of .+-.tan.sup.-1 (q/p) and each side of .beta..multidot.p.multidot.q, respectively.

Abstract: An image coloring/recoloring apparatus can provide natural-looking color images of an object illuminated by a source color. An input color image or a shaded image (grey scale image) which corresponds to the object is input to the coloring/recoloring apparatus. The coloring/recoloring apparatus logarithmically transforms a pixel sub-region corresponding to all or a portion of the object into intermediate color density data, which lies on a straight line in a color density space. This straight line starts at a point in the color density space corresponding to the source color and has a direction corresponding to the object's absorptive properties. By inputting a desired color and/or a new source color, it is possible to create a new image, which shows the object with the sub-region painted the desired color while being illuminated by the new source color.

Abstract: In a digital halftone screen generating device for generating a digital halftone screen comprising a plurality of periodic patterns, a configuration determining section (53) determines a grid (27) indicative of a configuration of one of the periodic patterns in the digital halftone screen by using periodic constants (51). Supplied with the periodic constants (51) and a function (50) defining a procedure for obtaining threshold values in a square area, a threshold value distributing section (54) rotates the threshold values defined by the function (50) by a screen angle. The threshold value distributing section (54) expands on the grid (27) threshold values enlarged by an enlargement ratio. When the threshold values on the grid (27) have discontinuous numbers, the threshold value distributing section (54) rearranges the threshold values so as to have continuous numbers.

Abstract: A distance information obtaining device which uses an image pickup device, to pick up an optical image of an object and produce a picture signal, and a signal processor which process the signal picture and calculates therefrom the distance between the object and the pickup device. A corrective filter is located along the optical path, which includes both an illuminating beam and a beam reflected off of the object, in order to correct the spectral characteristics of the light beam, the sensors located in the image pickup device and the color of the object. The corrective filters can be placed in various positions along the path. A method is provided to interchange various corrective filters according to the characteristics of the object.

Abstract: Based on a first color distribution which is formed by a first color in a color domain illuminated by an optical beam of a source color and is stored in a memory as picture elements, each representing an original color value, simulation is carried out for a second color distribution which will be formed in the color domain by a second color. For the first and second color distributions, a color space is defined by three primary colors with its origin used to represent black. An intermediate color value is calculated for each picture element with the original color values of the respective picture elements represented on a first color plane defined in the color space by the origin and the first and the source colors.

Abstract: A carrier tape has a plurality of rows.times.a plurality of columns of IC device holes and two pairs of sprocket holes. A plurality of finger leads extending into each IC device hole and a conductive lead for connecting all of the finger leads are formed on the carrier tape. While the carrier tape is conveyed with feed teeth of a sprocket being meshed with one pair of sprocket holes, the finger leads and the conductive leads are formed, and solder is plating on both of the leads. Only in a bonding step, the carrier tape is conveyed with the feed teeth of the sprocket being meshed with the other pair of sprocket holes. Since the sprocket holes used in the bonding step are not deformed, highly precise positioning of IC devices required in bonding can be efficiently achieved.

Abstract: A carrier tape has a plurality of rows.times.a plurality of columns of IC device holes and two pairs of sprocket holes. A plurality of finger leads extending into each IC device hole and a conductive lead for connecting all of the finger leads are formed on the carrier tape. While the carrier tape is conveyed with feed teeth of a sprocket being meshed with one pair of sprocket holes, the finger leads and the conductive leads are formed, and solder is plating on both of the leads. Only in a bonding step, the carrier tape is conveyed with the feed teeth of the sprocket being meshed with the other pair of sprocket holes. Since the sprocket holes used in the bonding step are not deformed, highly precise positioning of IC devices required in bonding can be efficiently achieved.

Abstract: An apparatus for identifying postage stamps automatically includes one or more scanners for detecting the various colors which are present at predetermined regions on the stamp proper and associated circuitry which receives the color signals and derives from them a feature vector which represents the color distribution over the scanned area. A plurality of feature vectors which define the color distribution associated with known stamps is stored in a memory. A comparator compares the feature vector of the stamp being examined to the prestored feature vectors and determines the identity of the stamps.