Image processing apparatus

• US 5,663,809 A
• Filed: 05/16/1995
• Issued: 09/02/1997
• Est. Priority Date: 04/19/1993
• Status: Expired due to Term

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Matsumoto, Kenji, Miyaza, Masao
• Primary Examiner(s): Rogers, Scott A.
• Application Number:
  US08/442,169
• Time in Patent Office: 840 Days
• Field of Search: 358/451, 358/453, 358/449, 358/448, 358/450, 358/406, 358/452, 358/528, 358/538, 358/537, 382/284, 382/282, 382/298, 355/55, 355/243, 395/102
• US Class Current: 358/450
• CPC Class Codes: G06T 3/40 Scaling of whole images or parts thereof, e.g. expanding or contracting
• CPC Class Codes: G06T 7/70 Determining position or orientation of objects or cameras camera calibration G06T7/80
• CPC Class Codes: G06T 7/73 using feature-based methods
• CPC Class Codes: G06V 10/24 Aligning, centring, orientation detection or correction of the image
• CPC Class Codes: G06V 10/248 by interactive preprocessing or interactive shape modelling, e.g. feature points assigned by a user

Abstract

An image processing apparatus obtains an exact distance of a marking portion shown on a document image based upon a magnification (reduction) shown on a document image such as a map. etc. following the sequence processes as mentioned below. First, a reduction value and a marking portion are recognized from an image data of a document image, and the marking portion is combined with the image data. Next, a dimension of the marking portion is obtained, and the exact distance of the marking portion is calculated based upon the obtained dimension and the reduction value. Then, after the distance value has been combined with the image data, the image data is outputted (copied). By adopting the processes, for example, in the case where an exact distance of a predetermined interval on the map is expected to be obtained, the desired distance value is shown in an outputted image only by preliminarily describing a marking on a specified interval in the document image. This makes it possible to improve added value of the apparatus when the image processing apparatus is applied to a digital copying machine and the like.

Claims

1. An image processing apparatus comprising:

image input means for reading a document image;

interval specifying means for specifying an arbitrary interval in the document image read by said image input means;

dimension calculating means for calculating a dimension of the interval;

dimension input means for inputting a prescribed dimension of the interval specified by said interval specifying means;

first ratio calculating means for calculating a first ratio of the calculated dimension of the interval to the prescribed dimension;

magnification input means for inputting an arbitrary magnification to the document image;

conversion means for converting a size of the document image in accordance with the magnification;

second ratio calculating means for calculating a second ratio of the calculated dimension of the interval in the document image, whose size has been converted by said conversion means, to the prescribed dimension in accordance with the first ratio and the magnification; and

combining means for combining data of the second ratio with the image data of the document image.

2. The image processing apparatus as defined in claim 1, further comprising image output means for visualizing and outputting both the data combined by said combining means.

3. The image processing apparatus as defined in claim 1, wherein said interval specifying means includes interval specifying point input means for specifying a length between two coordinates as an arbitrary interval by inputting the two coordinates.

4. The image processing apparatus as defined in claim 3, further comprising:

dimension line recognition means for recognizing a dimension line shown in the document image from the image data of the document image;

wherein said interval specifying point input means includes dimension reading means for reading coordinates at both ends of the dimension line.

5. The image processing apparatus as defined in claim 4, wherein said dimension input means includes dimension value reading means for reading a dimension value shown on the dimension line as a prescribed dimension.