WO2016188176A1

WO2016188176A1 - Measuring method and apparatus, and storage medium

Info

Publication number: WO2016188176A1
Application number: PCT/CN2016/075673
Authority: WO
Inventors: 彭军民
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-10-23
Filing date: 2016-03-04
Publication date: 2016-12-01
Also published as: CN106610269A

Abstract

The present invention provides a measuring method, comprising: collecting an image of a measured object, such that the image of the measured object is located in a reference area on a screen; and determining, according to an attribute parameter of an image collection device, the size of the reference area on the screen and a distance between the image collection device and the measured object, a first actual length and/or a second actual length of the measured object. The present invention also provides a measuring apparatus, a mobile terminal and a storage medium.

Description

Measuring method, device and storage medium

Technical field

The present invention relates to measurement technology, and in particular, to a measurement method, apparatus, and storage medium for performing measurement by an image acquisition device.

Background technique

With the popularization of smart mobile terminals, image acquisition devices in smart mobile terminals have become standard configurations, and image capture devices for automatic zoom/autofocus are becoming more and more popular, and users are increasingly using mobile terminals for other purposes. For example, image acquisition, distance measurement, etc., in the prior art, there is a method of performing distance measurement by the camera autofocus principle of the mobile terminal, and obtaining a distance between the camera and the measured object.

In addition to distance measurement, in daily life, users often encounter problems in area measurement, especially small area measurement. However, there is no related technical solution in the prior art for measuring the area of an object through an intelligent mobile terminal.

Summary of the invention

In view of this, embodiments of the present invention are directed to providing a measurement method, apparatus, and storage medium capable of realizing measurement of object length, width/height, and area by an image acquisition device in an intelligent mobile terminal.

To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:

A method of measurement, the method comprising:

Perform image acquisition on the object to be measured, so that the image of the object to be measured is located in the reference area on the screen;

According to the attribute parameters of the image acquisition device, the size of the reference area on the screen, and the image The distance between the device and the measured object is determined, and the first actual length and/or the second actual length of the measured object is determined.

In the above solution, the first actual length is the length of the measured object, and the second actual length is the width/height of the measured object; the method further includes: according to the first actual length and the second The actual length determines the area of the object to be measured.

In the above solution, before determining the first actual length and/or the second actual length of the measured object, the method further includes: determining a distance between the image capturing device and the measured object.

In the above solution, determining the first actual length and/or the second actual length of the measured object according to the attribute parameter of the image capturing device, the size of the reference area on the screen, and the distance between the image capturing device and the measured object. include:

After the image of the measured object is located in the reference area on the screen, determining the first intermediate length according to the attribute parameter of the image capturing device, the size of the reference area on the screen, and the distance between the image capturing device and the measured object, a second intermediate length, a third intermediate length, and a fourth intermediate length;

Determining the first actual length according to the first intermediate length and the second intermediate length;

The second actual length is determined based on the third intermediate length and the fourth intermediate length.

In the above solution, the first intermediate length, the second intermediate length, and the third intermediate length are determined according to the attribute parameter of the image capturing device, the size of the reference area on the screen, and the distance between the image capturing device and the measured object. Determining the fourth intermediate length includes:

Determining an intermediate reference length according to any elevation angle of the image acquisition device, a size of a reference area on the screen, and a distance between the image collection device and the measured object;

Determining a first intermediate length according to a first pitch angle of the image capturing device and an intermediate reference length;

Determining a second intermediate length according to the second elevation angle of the image acquisition device and the intermediate reference length;

Determining a third intermediate length according to the third elevation angle of the image acquisition device and the intermediate reference length;

A fourth intermediate length is determined based on the fourth pitch angle of the image capture device and the intermediate reference length.

In the above solution, the method further includes: outputting at least one of the following parameters: a first actual length of the measured object, a second actual length of the measured object, and an area of the measured object.

The embodiment of the invention further provides a measuring device, the device comprising: an image collecting module, a length determining module, wherein

The image acquisition module is configured to perform image collection on the measured object, so that the image of the measured object is located in a reference area on the screen;

The length determining module is configured to determine a first actual length and/or a second of the measured object according to an attribute parameter of the image capturing device, a size of the reference area on the screen, and a distance between the image capturing device and the measured object. Actual length.

In the above solution, the first actual length is the length of the object to be measured, and the second actual length is the width/height of the object to be tested;

The apparatus further includes an area determining module configured to determine an area of the object to be measured according to the first actual length and the second actual length.

In the above solution, the device further includes a distance measuring module configured to determine a distance between the image capturing device and the measured object.

In the above solution, the length determining module is configured to:

In the above solution, the length determination module is configured to:

In the above solution, the device further includes an output module configured to output at least one of the following parameters: a first actual length of the measured object, a second actual length of the measured object, and the measured object Area.

The embodiment of the invention further provides a mobile terminal, characterized in that the mobile terminal comprises the above-mentioned measuring device.

The embodiment of the invention further provides a computer storage medium storing a computer program for performing the measurement method of the embodiment of the invention.

The measuring method, the device and the storage medium provided by the embodiments of the present invention perform image collection on the measured object, so that the image of the measured object is located in the reference area on the screen; and according to the attribute parameters of the image capturing device, on the screen The first actual length and/or the second actual length of the measured object is determined by the size of the reference area and the distance between the image capturing device and the measured object. In this way, the object length and width/height can be measured by the image acquisition device of the smart mobile terminal. And further realize the measurement of the object area.

DRAWINGS

1 is a schematic flow chart of a measurement method according to an embodiment of the present invention;

2 is a schematic diagram of a reference area on a screen according to an embodiment of the present invention;

3 is a schematic diagram of an image collection range of an image acquisition device according to an embodiment of the present invention;

4 is a schematic flowchart of a method for determining a first actual length and/or a second actual length of an object to be tested according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an image collection range corresponding to a reference area according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic structural diagram of determining an optical path of a first actual length and/or a second actual length of the measured object according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a measuring apparatus according to an embodiment of the present invention.

detailed description

In the embodiment of the present invention, the image is collected by the line to be measured, so that the image of the measured object is located in the reference area on the screen; and according to the attribute parameters of the image capturing device, the size of the reference area on the screen, and the image collecting device. The distance from the measured object determines a first actual length and/or a second actual length of the measured object.

The attribute parameters of the image capturing device include a focal length of the image capturing device, an acquisition range and a pitch angle at a fixed distance, and the like.

The implementation of the technical solution of the embodiment of the present invention is described in detail below with reference to the accompanying drawings and embodiments.

FIG. 1 is a schematic flowchart of a measurement method according to an embodiment of the present invention. As shown in FIG. 1 , the measurement method in this embodiment includes the following steps:

Step 101: Perform image acquisition on the measured object, so that the image of the measured object is located in a reference area on the screen;

2 is a schematic diagram of a reference area on a screen according to an embodiment of the present invention, as shown in FIG. The reference area on the screen can be the same size as the screen, that is, the size of the reference area on the screen is the size of the screen; or it can be smaller than the screen, as shown by the dashed box in FIG. The size of the reference area can be set according to the actual situation.

In the embodiment of the present invention, since the reference area is a regular rectangle, when the object to be measured is an irregular object, when the image of the object to be measured is located in the reference area on the screen, an approximate method may be adopted. Most of the area of the object to be measured is collected into the reference area.

In the embodiment of the present invention, the method further includes: determining a distance between the image capturing device and the measured object.

Step 102: Determine a first actual length and/or a second actual length of the measured object according to an attribute parameter of the image capturing device, a size of the reference area on the screen, and a distance between the image capturing device and the measured object.

The first actual length is the length of the object to be measured, and the second actual length is the width/height of the object to be tested;

The attribute parameters of the image capturing device include a focal length of the image capturing device, a corresponding image capturing range of different focal lengths at different distances, and a pitch angle corresponding to the focal length of the image capturing device. Table 1 shows the image acquisition range after the 1/3" image sensor (CCD) of the embodiment of the present invention is matched with the lens of different focal lengths.

Table 1

As shown in Table 1, when the focal length of the image acquisition device and the CCD are determined, the image acquisition range of the fixed focal length at a fixed distance is constant, and the elevation angle of the image acquisition device is also determined. As shown in FIG. 3, FIG. 3 is a schematic diagram of an image collection range of an image acquisition device according to an embodiment of the present invention. In Figure 3, CBIJ is the screen of the mobile terminal, EDGH and E'D'G'H' are the image acquisition ranges of the image acquisition device at different distances, and OM is perpendicular to CBIJ and EDGH, between CBIJ and EDGH. Distance, O'M is perpendicular to CBIJ and E'D'G'H', is the distance between CBIJ and E'D'G'H'; for example, the focal length is 12 mm, as can be seen from Table 1, when When OM=5 m, the size of the EDGH is 2 m×1.2 m, and when the O′M=10 m, the size of the E′D′G′H′ is 4 m×3 m, and the elevation angle of the image capturing device ( Viewpoint) ∠EAO, ∠E'AO' are equal.

4 is a schematic flowchart of a method for determining a first actual length and/or a second actual length of an object to be tested according to an embodiment of the present invention. As shown in FIG. 4, according to an attribute parameter of an image capturing device, on the screen, according to an embodiment of the present invention Determining the size of the reference area and the distance between the image capturing device and the measured object, determining the first actual length and/or the second actual length of the measured object includes:

Step 102A: After the image of the measured object is located in the reference area on the screen, determine the first according to the attribute parameter of the image capturing device, the size of the reference area on the screen, and the distance between the image capturing device and the measured object. Intermediate length, second intermediate length, third intermediate length, and determining a fourth intermediate length;

Determining the first middle according to the first elevation angle and the intermediate reference length of the image acquisition device a second intermediate length is determined according to a second pitch angle of the image capturing device and an intermediate reference length; and a third intermediate length is determined according to the third pitch angle of the image capturing device and the intermediate reference length; The fourth elevation angle of the image acquisition device and the intermediate reference length determine a fourth intermediate length.

Step 102B: determining the first actual length according to the first intermediate length and the second intermediate length; determining the second actual length according to the third intermediate length and the fourth intermediate length;

Wherein the first actual length is:

The second actual length is:

The reference area may be the same as the screen size of the mobile terminal, or may be smaller than the screen; when the reference area is the same size as the screen, the corresponding image collection range of the reference area at different focal lengths is the image collection device. Corresponding image acquisition range at different focal lengths. FIG. 5 is a schematic diagram of an image collection range corresponding to a reference area according to an embodiment of the present invention. As shown in FIG. 5, when the reference area is the same as the size of the screen, the CBIJ is the size of the reference area, and the EDGH is The reference area is a corresponding image acquisition range at a fixed focal length; when the reference area is smaller than the size of the screen, the STUV is the size of the reference area, and the WXYZ is the corresponding image collection of the reference area at a fixed focal length. The range of the WXYZ can be obtained by simple geometric calculation according to the size of the STUV and CBIJ, EDGH, thereby determining the corresponding image acquisition range of the reference area at different focal lengths.

In the embodiment of the present invention, the reference area is the same as the screen size of the mobile terminal. When the reference area is smaller than the screen size of the mobile terminal, the method is still applicable, and only the data may be directly replaced.

FIG. 6 is a schematic structural diagram of determining an optical path of a first actual length and/or a second actual length of the measured object according to an embodiment of the present invention. According to the structure shown in FIG. 6, determining a first actual length of the measured object and/or Or the second actual length method includes the following process:

Wherein step (a) is a process of determining the intermediate reference length OA:

Wherein step (a) is to determine an intermediate reference length according to any elevation angle (such as ∠DAO) of the image acquisition device, the size of the reference area on the screen CB and BI, and the distance OM between the image acquisition device and the measured object. The process of OA; in one embodiment:

(a) determining the distance OM between the image acquisition device and the measured object, and determining the intermediate reference length OA according to the OM and the size of the reference area on the screen CB and BI and the first pitch angle ∠ DAO;

In this step, using the camera ranging function, the length OM of the image acquisition device position M of the tested center point O is obtained;

∠DAO is the self-constant attribute parameter of the image acquisition device. In the case where other attribute parameters (such as focal length and CCD) of the image acquisition device are determined, the ∠DAO can be directly obtained according to the data in Table 1, for example, according to Table 1. The data, in the case of a focal length of 2.8mm, when OM=5, ED=13, DG=9.8; and the screen size CB and BI are known, the geometrical calculation can directly obtain the elevation angle ∠DAO, and then according to the measurement The actual length of the OM and CB and BI are determined to determine the actual length of the current OA, which will not be described here;

Step (b) is a process of determining a first intermediate length AD according to a first pitch angle ∠DAO of the image acquisition device and an intermediate reference length OA; in an embodiment:

(b) calculating a first intermediate length AD according to OA and ∠DAO; AD = OA / cos ∠ DAO;

Step (c) is a process of determining a second intermediate length AF according to a second pitch angle ∠FAO of the image capturing device and an intermediate reference length OA; in an embodiment:

(c) Similarly, ∠FAO knows that the second intermediate length AF is calculated according to OA and ∠FAO, AF=OA/cos∠FAO;

Step (d) is to determine a third intermediate length AE according to the third elevation angle ∠EAO and the intermediate reference length OA of the image acquisition device, and a fourth elevation angle ∠LAO and an intermediate reference length OA according to the image acquisition device Determining the fourth intermediate length AL; in an implementation In the example:

(d) determining a third intermediate length AE according to the third elevation angle ∠EAO of the image acquisition device and the intermediate reference length OA according to the same principle as the steps (b) and (c); according to the image acquisition device a fourth pitch angle ∠LAO and an intermediate reference length OA, determining a fourth intermediate length AL; wherein

AE=OA/cos∠EAO;

AL=OA/cos∠LAO;

(e) determining the first actual length DE according to the first intermediate length AD and the second intermediate length AF;

(f) Similarly, determining the second actual length EH according to the third intermediate length AE and the fourth intermediate length AL;

In the embodiment of the present invention, the method further includes:

Step 103: Determine an area of the measured object according to the first actual length and the second actual length.

Taking FIG. 6 as an example, the area of the measured object=the first actual length×the second actual length;

Step 104: Output at least one of the following parameters: a first actual length of the measured object, a second actual length of the measured object, and an area of the measured object.

The embodiment of the present invention further provides a measuring device, which is located in a mobile terminal, and FIG. 7 is a schematic structural diagram of a measuring device according to an embodiment of the present invention. As shown in FIG. 7, the device includes: an image collecting module 71 and a length determining module. 72, of which,

The image acquisition module 71 is configured to perform image collection on the object to be measured, so that the image of the object to be measured is located in a reference area on the screen;

In the embodiment of the present invention, the reference area on the screen may be the same as the size of the screen, that is, the size of the reference area on the screen is the size of the screen; or may be smaller than the screen, and the size of the reference area may be set according to actual conditions. .

In the embodiment of the present invention, the device further includes a distance measuring module 73 configured to determine a distance between the image capturing device and the measured object.

The length determining module 72 is configured to determine a first actual length and/or a length of the measured object according to an attribute parameter of the image capturing device, a size of the reference area on the screen, and a distance between the image capturing device and the measured object. Second actual length;

The attribute parameters of the image capturing device include a focal length of the image capturing device, a corresponding image capturing range of different focal lengths at different distances, and a pitch angle of the image capturing device.

In the embodiment of the present invention, the length determining module 72 is configured to:

In an embodiment, the length determining module is configured to: determine an intermediate reference length according to any pitch angle of the image capturing device, a size of a reference area on the screen, and a distance between the image capturing device and the measured object;

Determining a first intermediate length according to the first elevation angle and the intermediate reference length of the image acquisition device; determining a second intermediate length according to the second elevation angle of the image acquisition device and the intermediate reference length; according to the image acquisition device The third elevation angle and the intermediate reference length determine a third intermediate length; and the fourth intermediate length is determined according to the fourth elevation angle of the image acquisition device and the intermediate reference length.

Wherein the first actual length is:

Determining the second actual length according to the third intermediate length and the fourth intermediate length;

The second actual length is:

The apparatus further includes an area determining module 74 configured to determine an area of the object to be measured based on the first actual length and the second actual length.

The area of the measured object=first actual length×second actual length.

In the embodiment of the present invention, the device further includes an output module 75 configured to output at least one of the following parameters: a first actual length of the measured object, a second actual length of the measured object, and the The area of the object being measured.

The embodiment of the invention further provides a mobile terminal, which comprises the measuring device of FIG.

Each module in the measurement device provided in the embodiment of the present invention may be implemented by a processor, and may also be implemented by a specific logic circuit; wherein the processor may be a processor on a mobile terminal or a server, in practical applications. The processor may be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field programmable gate array (FPGA).

In the embodiment of the present invention, if the above measurement method is implemented in the form of a software function module and sold or used as a stand-alone product, it may also be stored in a computer readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, an embodiment of the present invention further provides a computer storage medium, and the computer storage medium A computer program for performing the above-described measurement method of the embodiment of the present invention is stored in the texture.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

The measuring method and device provided by the embodiments of the present invention perform image collection on the measured object, so that the image of the measured object is located in the reference area on the screen; and according to the attribute parameters of the image capturing device and the reference area on the screen The size and the distance between the image acquisition device and the measured object determine a first actual length and/or a second actual length of the measured object. In this way, the measurement of the length and width/height of the object can be realized by the image acquisition device of the intelligent mobile terminal, and the measurement of the area of the object can be further realized.

Claims

A method of measurement, the method comprising:

Perform image acquisition on the object to be measured, so that the image of the object to be measured is located in the reference area on the screen;

The first actual length and/or the second actual length of the measured object is determined according to an attribute parameter of the image capturing device, a size of the reference area on the screen, and a distance between the image capturing device and the measured object.
The method according to claim 1, wherein said first actual length is a length of said object to be measured, said second actual length being a width/height of said object to be measured; said method further comprising: according to said An actual length and a second actual length determine the area of the object to be measured.
The method according to claim 1 or 2, wherein before determining the first actual length and/or the second actual length of the measured object, the method further comprises: determining the image capturing device and the measured object The distance between them.
The method according to claim 1 or 2, wherein the determining the first actual content of the measured object according to the attribute parameter of the image capturing device, the size of the reference area on the screen, and the distance between the image capturing device and the measured object The length and / or the second actual length includes:

After the image of the measured object is located in the reference area on the screen, determining the first intermediate length according to the attribute parameter of the image capturing device, the size of the reference area on the screen, and the distance between the image capturing device and the measured object, a second intermediate length, a third intermediate length, and a fourth intermediate length;

Determining the first actual length according to the first intermediate length and the second intermediate length;

The second actual length is determined based on the third intermediate length and the fourth intermediate length.
The method according to claim 4, wherein said according to said attribute parameter of said image acquisition device, a size of a reference area on the screen, and a distance between the image acquisition device and the object to be measured, Determining the first intermediate length, the second intermediate length, the third intermediate length, and determining the fourth intermediate length comprises:

Determining an intermediate reference length according to any elevation angle of the image acquisition device, a size of a reference area on the screen, and a distance between the image collection device and the measured object;

Determining a first intermediate length according to a first pitch angle of the image capturing device and an intermediate reference length;

Determining a second intermediate length according to the second elevation angle of the image acquisition device and the intermediate reference length;

Determining a third intermediate length according to the third elevation angle of the image acquisition device and the intermediate reference length;

A fourth intermediate length is determined based on the fourth pitch angle of the image capture device and the intermediate reference length.
The method according to claim 1 or 2, wherein the method further comprises: outputting at least one of the following parameters: a first actual length of the measured object, a second actual length of the measured object, a The area of the measured object.
A measuring device, comprising: an image collecting module, a length determining module, wherein

The image acquisition module is configured to perform image collection on the measured object, so that the image of the measured object is located in a reference area on the screen;

The length determining module is configured to determine a first actual length and/or a second of the measured object according to an attribute parameter of the image capturing device, a size of the reference area on the screen, and a distance between the image capturing device and the measured object. Actual length.
The apparatus according to claim 7, wherein said first actual length is a length of said object to be measured, and said second actual length is a width/height of said object to be measured;

The apparatus further includes an area determining module configured to: according to the first actual length and The actual length is determined by determining the area of the object to be tested.
The apparatus of claim 7 or 8, wherein the apparatus further comprises a distance measurement module configured to determine a distance between the image acquisition device and the object under test.
The apparatus according to claim 7 or 8, wherein said length determining module is configured to:

After the image of the measured object is located in the reference area on the screen, determining the first intermediate length according to the attribute parameter of the image capturing device, the size of the reference area on the screen, and the distance between the image capturing device and the measured object, a second intermediate length, a third intermediate length, and a fourth intermediate length;

Determining the first actual length according to the first intermediate length and the second intermediate length;

The second actual length is determined based on the third intermediate length and the fourth intermediate length.
The apparatus of claim 10 wherein the length determination module is configured to:

Determining an intermediate reference length according to any elevation angle of the image acquisition device, a size of a reference area on the screen, and a distance between the image collection device and the measured object;

Determining a first intermediate length according to a first pitch angle of the image capturing device and an intermediate reference length;

Determining a second intermediate length according to the second elevation angle of the image acquisition device and the intermediate reference length;

Determining a third intermediate length according to the third elevation angle of the image acquisition device and the intermediate reference length;

A fourth intermediate length is determined based on the fourth pitch angle of the image capture device and the intermediate reference length.
The apparatus according to claim 7 or 8, wherein said apparatus further comprises an output module configured to output at least one of: a first actual length of said measured object, a second of said measured object Actual length, the area of the object to be measured.
A mobile terminal comprising the test according to any one of claims 6 to 10. Measuring device.
A computer storage medium having stored therein computer executable instructions for performing the measurement method of any one of claims 1 to 6.