摘要:
A three-dimensional curved-surface model can be estimated by using both two-dimensional outlines obtained from a piece of image photographed from the top and a restriction that the paper is rectangular. Then, only the three-dimensional distortion in the image can be corrected based on the obtained three-dimensional curved-surface model.
摘要:
A rather expanded binary image and a rather blurry binary image are generated from a multiple-valued image. A ruled line candidate area is extracted from the rather expanded binary image, and the extracted ruled line candidate area is verified using the rather blurry binary image.
摘要:
A pattern extraction apparatus computes the convexity/concavity of an input pattern, regards a pattern having large convexity/concavity as a character, and regards a pattern having small convexity/concavity as a ruled line.
摘要:
An image processing apparatus for extracting the specified objects has a background image extract unit for extracting a background; a first average background extract unit which extracts an image that includes a plurality of stationary and moving objects each having a speed not higher than a predetermined first speed and also the background; a second average background extract unit which extracts an image that includes the stationary and moving objects each having a speed not higher than a predetermined second speed and also the background; a first difference-calculation processing unit which calculates a difference between an output from the background image extract unit and an output from the first average background extract unit as a first speed image; a second difference-calculation processing unit which calculates a difference value between two outputs from the first and second average background extract units as a second speed image; and a third difference-calculation processing unit which calculates a difference value between an original image and either one of outputs from the first and second average background extract units as a third speed image.
摘要:
A disk carrier is comprised of a carrier plate having one or more throughholes at which disks are carried with both surfaces exposed to be processed. Abutting and partially around each of these throughholes is a recess such that not only can a disk be easily positioned at the throughhole without having its surface scratched but also a corner is formed in this recessed region which can serve as an indexing depression. For this purpose, the recess may be fomed with a bottom surface parallel to the surface of the carrier plate and boundary wall in the form of a part of a polygon such that two mutually adjacent straight parts thereof, together with the bottom surface, form a corner which can serve as a reference position easily accessible by a touch sensor.
摘要:
A method of curve approximation comprises a dividing step for dividing a curve into arcs classified into four quadrant directions according to a normal thereof, each having a single-value monotone increasing or decreasing function, and a calculating step for calculating an approximate curve represented by a curve approximation function by using an interval between end points of each arc as a curve approximation interval.