Abstract:
An arrangement for high-resolution scanning of large image formats with exact geometrical correspondence is described. It is applied in photogrammetry and in optoelectronic scanners with high requirements regarding exact geometrical correspondence. Metric image contractions of large image formats are obtained without dimension-embodying auxiliary means by employing a CCD matrix which is exactly dimensioned to pixel sensitivity distribution. This CCD matrix is used as an absolute dimensional embodiment, from which only one active pixel area determined as a function of the memory area of the frame grabber is adopted into the frame grabber while ensuring an image contraction which is absolutely synchronous with the pixels. Based on the pixel raster, this active pixel area forms the step width for the high-precision scanning mechanism which is adapted with respect to its accuracy, wherein the active pixel areas of the scanning steps are lined up so as to cover the surface without gaps and substantially without overlaps. Dimension-embodying auxiliary means, e.g. network grids, can accordingly be dispensed with without any impairment of accuracy.
Abstract:
An image processing apparatus includes a scanner unit for reading an image of an original document, a memory which, if the image is read by the scanner unit in a divided manner as a plurality of partial images, stores the read partial images as respective partial document data, and a joint-portion processing section. The joint-portion processing section is for recognizing joints of the partial document data stored in the memory and for joining the partial document data according to the recognized joints.
Abstract:
An image processing apparatus includes a joining-portion processing section for combining partial images that have been read in a divided manner. Focused on partial document data predeterminately specified among a plurality of partial document data stored in an image memory, the joint-portion processing section performs a recognizing operation on the joints, a positioning operation and other operations beginning with the proximity of the specified partial document data. The partial images are then combined together to form one complete image. For example, in the case of copying an original document, which is of a size too large to be copied in one operation, on one sheet of paper in a reduced manner, it becomes possible to eliminate time consuming tasks such as trimming and pasting of the partial documents as well as calculating of the reduction rate. Thus, the efficiency of the operation is improved, and by specifying the partial document data from which the operation is started, it is possible to join the partial images accurately irrespective of the order of inputting the partial documents.
Abstract:
A digitizer is provided with a camera, a movable stage and a control device. The stage may be moved by first and second linear motors such that the digitizer can be used in non-stationary or vibrating environments. A bundle of fiber optics is used to constantly illuminate a patch of an image to be digitized. Also, a control device is provided between the camera and the first and second linear motors for controlling the camera and the positioning of the stage. Various sized images can easily be digitized while memory requirements are kept low and speed is kept high. This digitizer provides for an adaptive dynamic range as well as an improved contrast sensitivity. Also, a mechanism for correcting the effects of skew and keystoning is provided which enables collection of seamless mosaics.
Abstract:
A method and apparatus for improving the image quality of a CRT recorder wherein image information is transmitted to the image receiving medium through a plurality of tracks provided on a phosphor stripe of the CRT. An algorithm in the memory determines the deflection of the electron beam so that the tracks are activated in a predetermined order. As the image receiving medium is scrolled past the CRT faceplate, the image will be exposed on the image receiving medium so that no two adjacent image lines are exposed by adjacent tracks. In a further embodiment, image lines are produced by activating the tracks in a random order.
Abstract:
An optical beam scanning apparatus includes a beam-to-beam distance adjuster (300) for rotationally displacing a beam splitter (301). The beam-to-beam distance adjuster (300) comprises three arm members (312, 313, 314) which are linked to each other through notch portions (323, 324). A member (315) is linked to the arm member (313). The beam splitter (301) is secured on the member (315) from which a plate spring (316) extends. A projection member (317) is provided between a leading edge portion of the plate spring (316) and the arm member (314). A rotation angle of the beam splitter (301) can be changed by actuating three arm members (312, 313, 314) in link motion, whereby a beam-to-beam distance between two beams (B.sub.a, B.sub.b) can be also changed.
Abstract:
The method of this invention includes the steps of positioning a reseau with grid marks on the object and sequentially illuminating the grid marks separate from the object and illuminating the object separate from the grid marks or in a manner that the grid marks are not visible with the object. The image of the grid mark positions, when illuminated, are digitized and stored in computer memory and correlated with the image of the object when it is illuminated and digitized. The scale of the image can also be correlated to the scale of the grid marks.
Abstract:
The invention is an improved apparatus for recording an image onto a light recording medium by sequentially recording a plurality of sections onto the light recording medium which constitute the image and further an apparatus for reading previously recorded information disposed on a recording medium (162). The invention utilizes a light position sensor (201) having a target area having a plurality of apertures (604) including at least one line segment coupled to light emitted from a plurality of positions within the light emitting area (120) of the light source (120) used for recording for detecting the position of the light intersecting the target area (201) of the sensor from the light emitting area of the light source and generating at least one signal dependent upon the light intersecting the target area. A controller (13) responsive to the at least one signal, produces at least one correction parameter, sequentially controls the recording and reading of sections (F1-FN) to record or read the image by controlling the position of the light on a light emitting area of the light source as a function of the at least one correction parameter during the recording or reading of each section to cause the light to move to coordinates on the light emitting area of the light source to cause the light to intersect the recording medium at the recording or recorded position coordinates and controls the position of the translator for recording or reading each section.
Abstract:
A method of inputting an image of an original by inputting images of a plurality of divisions into which the original is divided, by the use of an image input device. By dividing the original and inputting the divisions separately, an image input device having relatively few pixels may be used. An image of a division of the original input by the image input device is displayed in an image scrolling area of a screen of a monitor and an image of part of another division adjacent to the division is displayed in an image fixing area of the screen adjacent to one side of the image scrolling area. The image displayed in the image scrolling area is scrolled so as to avoid discontinuity between the images displayed in both image areas by shifting one of the original and the image input device relative to the other. The data of the image displayed in the image scrolling area is stored in an image memory. The entire image of the original thus may be stored, and may be printed subsequently on photograhic paper.
Abstract:
A photographic system for accurately reproducing encoded information onto a recording medium is disclosed. The system includes an image/light source, a feedback sensor, a lens assembly, a controller, a recording medium assembly and a reading sensor, whereby encoded information is decomposed into sections, adjusted, and transmitted such that the sections are correctly aligned and smoothly joined into a final reproduced image. According to the present invention, encoded information can also be digitized and read.