Image processing apparatus

• US 5,589,949 A
• Filed: 05/30/1995
• Issued: 12/31/1996
• Est. Priority Date: 04/19/1993
• Status: Expired due to Term

• Current Assignee: Sharp Electronics Corporation (Hon Hai Precision Industry Co., Ltd.), 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:
  US08/453,900
• Time in Patent Office: 581 Days
• Field of Search: 358/451, 358/453, 358/448, 382/113, 382/298, 364/449, 340/995
• US Class Current: 358/451
• 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 of 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;

magnification fetching means for fetching a magnification of the document image;

interval fetching means for fetching a specified interval on the document image;

dimension calculating means for calculating a dimension of the interval on the document image; and

combining means for combining the image data of the document image read by said image input means with a distance as distance information which is represented by a value obtained by multiplying the dimension by the magnification.

2. The image processing apparatus as defined in claim 1, further comprising reference point input means for inputting a reference point on a road of a map when the document is a map,

said magnification fetching means inputting a reduction ratio of the map,

said interval fetching means inputting a predetermined interval on the road by an exact distance,

said dimension calculating means comprising unit length calculating means for calculating a unit length which is a length of a unit distance on the map from the reduction ratio and conversion means for converting the interval into the length on the map from the unit length, and

said combining means comprising road recognition means for recognizing the road from the image data starting at the reference point by superimposing the reference point on the image data of the map read by said image input means, said combining means combining the image data of the road recognized by said road recognition means with marking data for each converted interval which has been converted by said conversion means.

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

4. The image processing apparatus as defined in claim 2, wherein said road recognition means includes comparison means for comparing a feature of the road with sample data for each predetermined block of the image data so as to recognize the road.

5. The image processing apparatus as defined in claim 2, wherein said combining means includes distance calculating means for calculating an exact distance of the road from the reference point so as to decide the conversion intervals based upon the unit length.

6. The image processing apparatus as defined in claim 5, further comprising addition means for adding the converted intervals subsequently beginning with the reference point to provide the obtained values as markings.