CN102865823A

CN102865823A - Length measuring method based on currency

Info

Publication number: CN102865823A
Application number: CN201210391787XA
Authority: CN
Inventors: 贾媛; 宋锐; 周晓玲
Original assignee: Xidian University
Current assignee: Xidian University
Priority date: 2012-10-12
Filing date: 2012-10-12
Publication date: 2013-01-09

Abstract

Disclosed is a length measuring method based on currency. The method comprises that a currency size database is established and comprises information of universal currency types, characteristics and lengths; an object to be measured and the currency are arranged in the same plane and an image of the object to be measured and the currency is captured; currency types and characteristics are detected; corresponding currency lengths are read from the currency size database in accordance with detected currency types and characteristics; the length of the object to be measured in the image is detected from the captured image; and the length of the object to be measured is calculated in accordance with the comparison of the currency size and the length of the object to be measured in the image. The method is applied to mobile devices such as mobile phones. The method is simple, the currency serves as a benchmark and extra measurement tools are not required.

Description

A kind of take the length measurement method of currency as the basis

[technical field]

The present invention relates to a kind of take the length measurement method of currency as the basis.

[background technology]

Because the fast development of digital technology, image and video are more and more universal in routine work and life.Therefore image and video information occupy the main part of information day by day, just need to understand picture material first before image and video information are processed, thereby image is classified etc., are convenient to follow-up image processing.

The conventional method of traditional image understanding is, at first raw data carried out filtering, then to filtered Image Segmentation Using, to extract the features relevant such as border, texture, then seeks the scene element in image, and identification is the special objective of name in advance.The method is the various piece in the analyzing and processing solution image preferably, obtains the essential information of objects in images.But the shortcoming that the method exists is: can not obtain the information of actual object corresponding to object in the relevant image, such as length etc.

[summary of the invention]

The object of the present invention is to provide a kind of take the length measurement method of currency as the basis, its can measurement image in the size of object.

The present invention is a kind of take the length measurement method of currency as the basis: it is characterized in that: said method comprising the steps of:

Step 1: set up currency dimensional data storehouse, comprise type, feature and the length information of current money in the described currency dimensional data storehouse;

Step 2: object under test and currency place in the same plane, catch its image;

Step 3: detect currency type and feature;

Step 4: by currency type and the feature that detects, in currency dimensional data storehouse, read corresponding currency length;

Step 5: from the image of catching, detect the length of object under test in image;

Step 6: with currency size in the described image and the contrast of determinand length, and calculate determinand length.

On the basis of technique scheme, described currency is coin or bank note.

On the basis of technique scheme, described step 3 also is included in the zone that obtains the currency place in the image, obtains length and width, the anglec of rotation of currency in image.

On the basis of technique scheme, comprise type, feature and the length information of Renminbi in the described database.

On the basis of technique scheme, comprise type, feature and the length information of external current money in the described database.

On the basis of technique scheme, described step 5 also comprises according to the determinand feature, detects the zone of determinand in image.

Compared with prior art, the present invention places object under test and currency in the same plane by setting up currency dimensional data storehouse, catches its image, does size datum with currency, and obtains the size of determinand by contrast.The method is applicable to such as mobile devices such as mobile phones, and measuring method is simple, take currency as benchmark, does not need extra survey instrument.

[description of drawings]

Fig. 1 is that the present invention is a kind of take the length measurement method step schematic diagram of currency as the basis;

Fig. 2 is that the present invention is a kind of take the length measurement method schematic diagram of currency as the basis.

[embodiment]

Please refer to Fig. 1 and Fig. 2, the present invention is a kind of take the length measurement method of currency as the basis: said method comprising the steps of:

Step 1: set up currency dimensional data storehouse, comprise type, feature and the length information of current money in the described currency dimensional data storehouse; Described currency is coin or bank note.It is Renminbi or external current money.So that use in the country variant area.

Step 3: detect currency type and feature; And obtain the zone at currency place in the image, obtain length and width, the anglec of rotation of currency in image;

Step 5: at first according to the determinand feature, detect the zone of determinand in image, then from the image of catching, detect the length of object under test in image;

The present invention places object under test and currency in the same plane by setting up currency dimensional data storehouse, catches its image, does size datum with currency, and obtains the size of determinand by contrast.The method is applicable to such as mobile devices such as mobile phones, and measuring method is simple, take currency as benchmark, does not need extra survey instrument.

Claims

One kind take currency as the basis length measurement method: it is characterized in that: said method comprising the steps of:

Step 1: set up currency dimensional data storehouse, comprise type, feature and the length information of current money in the described currency dimensional data storehouse;

Step 2: object under test and currency place in the same plane, catch its image;

Step 3: detect currency type and feature;

Step 4: by currency type and the feature that detects, in currency dimensional data storehouse, read corresponding currency length;

Step 5: from the image of catching, detect the length of object under test in image;

Step 6: with currency size in the described image and the contrast of determinand length, and calculate determinand length.
2. a kind of take the length measurement method of currency as the basis as claimed in claim 1, it is characterized in that: described currency is coin or bank note.
3. a kind of take the length measurement method of currency as the basis as claimed in claim 1, it is characterized in that: described step 3 also is included in the zone that obtains the currency place in the image, obtains length and width, the anglec of rotation of currency in image.
4. a kind of take the length measurement method of currency as the basis as claimed in claim 1, it is characterized in that: the type, feature and the length information that comprise Renminbi in the described database.
5. a kind of take the length measurement method of currency as the basis as claimed in claim 1, it is characterized in that: the type, feature and the length information that comprise external current money in the described database.
6. a kind of take the length measurement method of currency as the basis as claimed in claim 1, it is characterized in that: described step 5 also comprises according to the determinand feature, detects the zone of determinand in image.