CN105975566B - Image-based information searching method and device - Google Patents
Image-based information searching method and device Download PDFInfo
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- CN105975566B CN105975566B CN201610286565.XA CN201610286565A CN105975566B CN 105975566 B CN105975566 B CN 105975566B CN 201610286565 A CN201610286565 A CN 201610286565A CN 105975566 B CN105975566 B CN 105975566B
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- 238000012790 confirmation Methods 0.000 claims description 5
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- 235000013399 edible fruits Nutrition 0.000 claims description 3
- 230000006870 function Effects 0.000 description 11
- 239000000243 solution Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012015 optical character recognition Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06F16/583—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using metadata automatically derived from the content
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Studio Devices (AREA)
Abstract
The invention is suitable for the technical field of electronic terminals, and provides an image-based information searching method and device, wherein the image-based information searching method and device comprise the following steps: starting a camera of the mobile terminal and starting a light emitting device; acquiring a first image shot by the camera, wherein in the first image, a light projection point of the light emitting device is positioned at a first vertex of a rectangular area where a search object is positioned; acquiring a second image shot by the camera, wherein in the second image, a light projection point of the light emitting device is positioned at a second vertex of the rectangular area, and the second vertex and the first vertex are opposite vertices of the rectangular area; constructing a rectangular frame based on the positions of the light projection points in the first image and the second image; and performing content recognition on the image in the rectangular frame to determine a search object, and acquiring a search result. The invention reduces the difficulty of intercepting the searched object in the image and improves the information matching efficiency in the searching process.
Description
Technical field
The invention belongs to electric terminal technical fields, more particularly to information search method and device based on image.
Background technique
Currently, many e-education products on the market can be realized to take pictures and search topic function, pass through shooting word or word
Group is to search for corresponding paraphrase, or by shooting topic to search for corresponding answer.Take pictures search topic function realization need through
Cross following steps: starting camera-focusing takes pictures-in the picture interception object search-by OCR technique by object search
It is converted into text-server search and matches search result-server search result is fed back to electric terminal.
During the realization for function of search of taking pictures, the spacing of object search and non-search object may be very in the page
It is narrow, or due to camera with the page is not parallel that the object search shot is caused to tilt in the picture, above situation can mention
Thus the difficulty that height in the picture intercepts object search increases system background to the identification difficulty of object search, drop
The low information matches efficiency searched during topic of taking pictures.
Summary of the invention
In view of this, the embodiment of the invention provides information search method and device based on image, to solve existing skill
The problem of art can improve the difficulty intercepted in the picture to object search, reduce the information matches efficiency in search process.
In a first aspect, providing the information search method based on image, comprising:
Start the camera of mobile terminal, and starts light emitting devices;
The first image for obtaining the camera shooting, in the first image, the light projection of the light emitting devices
Point is located at the first vertex of rectangular area locating for object search;
The second image for obtaining the camera shooting, in second image, the light projection of the light emitting devices
Point is located at the second vertex of the rectangular area, and second vertex and first vertex are the diagonal top of the rectangular area
Point;
Position based on light projection point in the first image and second image constructs rectangle frame;
Content recognition is carried out to determine object search to the image in the rectangle frame, and obtains search result.
Second aspect provides the information search device based on image, comprising:
Start unit for starting the camera of mobile terminal, and starts light emitting devices;
First acquisition unit, for obtaining the first image of the camera shooting, in the first image, the light
The light projection point of emitter is located at the first vertex of rectangular area locating for object search;
Second acquisition unit, for obtaining the second image of the camera shooting, in second image, the light
The light projection point of emitter is located at the second vertex of the rectangular area, and second vertex and first vertex are described
Rectangular area to angular vertex;
Construction unit constructs rectangle for the position based on light projection point in the first image and second image
Frame;
Search unit for carrying out content recognition to the image in the rectangle frame to determine object search, and is obtained and is searched
Hitch fruit.
In embodiments of the present invention, object search is positioned by the light projection point of light emitting devices generation, with
Rectangular area locating for object search is efficiently intercepted, reduces interference of the non-search object to search result, thus reduces
The difficulty intercepted in the picture to object search improves the information matches efficiency in search process.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the implementation flow chart of the information search method provided in an embodiment of the present invention based on image;
Fig. 2 is light projection point exemplary diagram provided in an embodiment of the present invention;
Fig. 3 is the specific implementation flow chart of the information search method S104 provided in an embodiment of the present invention based on image;
Fig. 4 be another embodiment of the present invention provides the information search method based on image implementation flow chart;
Fig. 5 is the structural block diagram of the information search device provided in an embodiment of the present invention based on image.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In the embodiment of the present invention, start the camera of mobile terminal, and starts light emitting devices;The camera is obtained to clap
The first image taken the photograph, in the first image, the light projection point of the light emitting devices is located at rectangle region locating for object search
First vertex in domain;The second image for obtaining the camera shooting, in second image, the light of the light emitting devices
Incident point is located at the second vertex of the rectangular area, and second vertex and first vertex are pair of the rectangular area
Angular vertex;Position based on light projection point in the first image and second image constructs rectangle frame;To the rectangle frame
In image carry out content recognition to determine object search, and obtain search result.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
Fig. 1 shows the implementation process of the information search method provided in an embodiment of the present invention based on image, in the present invention
In embodiment, the information search based on image, image is the image comprising object search shot by camera.Fig. 1 institute
Details are as follows for the implementation process of corresponding embodiment:
In S101, start the camera of mobile terminal, and starts light emitting devices.
The realization of the embodiment of the present invention takes pictures to object search firstly the need of by camera completion, described search object
Including but not limited to word, phrase, topic, text block etc..In embodiments of the present invention, start camera, so that user passes through
Manipulation camera shoots the object search on paper or other planes, in addition, in embodiments of the present invention, can also take the photograph
As adjacent domain one light emitting devices of setting of head, the light which is emitted includes but is not limited to infrared light, swashs
Light etc., so, the light which issues can be incident upon in the shooting main body of camera, so that camera is clapped
The light projection point of the light emitting devices on paper can be shown in the image taken the photograph.
In S102, the first image of the camera shooting, in the first image, the light emitting devices are obtained
Light projection point be located at the first vertex of rectangular area locating for object search.
In S103, the second image of the camera shooting, in second image, the light emitting devices are obtained
Light projection point be located at the second vertex of the rectangular area, second vertex and first vertex are the rectangular area
To angular vertex.
It, therefore, can be in general, the object search in plane is printed with the format of text block or image block or shows
Shared region based on the object search in the planes determines a rectangular area, only includes the search in the rectangular area
Object.Therefore, based on the above situation, in embodiments of the present invention, the light that light emitting devices issues is incident upon the rectangle respectively
The a pair in region shoots situation is projected twice to this respectively, projects twice it is possible thereby to record this in angular vertex
Position of the light projection point in camera plane.
As shown in Fig. 2, topic 2 is object search, the light projection point of light emitting devices is the cross cursor in Fig. 2, then may be used
With the position 1 and position 2 being projected to cursor in two times in Fig. 2, and shooting obtains this page projected twice respectively, then in fact
On border, position 1 is the left upper apex of rectangular area locating for 2 text block of topic, and position 2 is rectangle locating for 2 text block of topic
The bottom right vertex in region, position 1 and position 2 constitute a pair of the rectangular area to angular vertex.
In as an embodiment of the present invention, the camera shoot the first image and second image it
Before, the launching position of light projection point is prompted by the mobile terminal, so that the light projection point of the emitter projects respectively
To in the rectangular area to angular vertex.
In the present embodiment, the launching position of the light issued to light emitting devices is mentioned in the enterprising row text of mobile terminal screen
Show, or voice prompting is carried out by mobile terminal, so, the projection position of user's definitely light projection point can be made
It sets, accelerates the acquisition speed of the first image and the second image, so as to improve the operating efficiency of entire information seeking processes.
In S104, the position based on light projection point in the first image and second image constructs rectangle frame.
It is the one of unknown rectangular area with the position of light projection point in above-mentioned first image and the second image on application backstage
To angular vertex, a unique rectangle frame can be constructed, only includes the picture material of object search in the rectangle frame.
As a kind of implementation of the embodiment of the present invention, S104 can be realized by mode as shown in Figure 3:
S301 is marked according to the position of light projection point in the first image in the same position of second image
Note.
S302, pair of the position of light projection point and the position of mark respectively as the rectangle frame in second image
Angular vertex constructs the rectangle frame.
The relevant technologies based on image recognition, in embodiments of the present invention, can by parsing the first image in pixel,
In the first image search have specific pixel characteristic one piece of contiguous pixels region, the region be light projection point in the picture
The light block showed, and matched by shape, determine that the shape of the light block is identical or close as the shape of preset cursor graphic
Seemingly, it thereby determines that the light block is light projection point, completes the positioning of light projection point, and carried out in the same position of the second image
Mark, to complete the positioning of the light projection point generated to projection operation twice on the second image, then by the two anchor points
A pair as unknown rectangular area completes the building of rectangle frame to angular vertex.
In S105, content recognition is carried out to determine object search to the image in the rectangle frame, and obtain search knot
Fruit.
Based on the image in the rectangle frame, content recognition is carried out to object search therein using backstage, for example, using light
Character recognition (Optical Character Recognition, OCR) technology determines search by detecting dark, bright mode
Then shape is translated into computword with character identifying method by the shape of object, to obtain the search pair of text formatting
As.
Specifically, the object search of text formatting is uploaded to server by mobile terminal, and server is receiving search pair
As later, carrying out data correction and parsing, scanning for matching to the content parsed in the database, be searched to get this
The corresponding search result of rope object, and the search result is back to mobile terminal, mobile terminal shows the search result, thus
It completes entirely based on the information seeking processes of image.
Further, as an embodiment of the present invention, as shown in figure 4, in the image in the rectangle frame
After content recognition is carried out to determine object search, before the acquisition search result, the method also includes:
S401, show the content recognition as a result, so that user inputs according to the result of the content recognition instructs.
S402, if detecting, user's input is confirmation instruction, and the result based on the content recognition scans for.
In the embodiment shown in fig. 4, after completing to the content recognition of image in rectangle frame, the content identified is shown,
So that user confirms the correctness of the content recognition result, only after user confirms and has input confirmation instruction, just with clothes
Business device backstage is communicated, and object search is uploaded, to guarantee the correctness of search result.
S403, if detecting, user's input is again photographing instruction, returns and executes taking the photograph for the starting mobile terminal
As head, and start the operation of light emitting devices.
And if user input be again photographing instruction, the light projection point location represented before this is incorrect, leads to content
It identifies mistake, returns to S101 at this time and execute relevant operation shown in FIG. 1, to ensure the accuracy of information search.
In embodiments of the present invention, object search is positioned by the light projection point of light emitting devices generation, with
Rectangular area locating for object search is efficiently intercepted, interference of the non-search object to search result is reduced, meanwhile, when light is thrown
When exit point is cross cursor, or the slant correction of image provides horizontal and vertical reference line, thus reduces in image
In difficulty that object search is intercepted, improve the information matches efficiency in search process.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present invention constitutes any limit
It is fixed.
Corresponding to, based on the information search method of image, Fig. 5 shows the embodiment of the present invention and mentions described in foregoing embodiments
The structural block diagram of the information search device based on image supplied, the information search device based on image can be built in movement
In terminal or the application system of mobile terminal.For ease of description, only the parts related to this embodiment are shown.
Referring to Fig. 5, which includes:
Start unit 51, starts the camera of mobile terminal, and starts light emitting devices;
First acquisition unit 52 obtains the first image of the camera shooting, in the first image, the light hair
The light projection point of injection device is located at the first vertex of rectangular area locating for object search;
Second acquisition unit 53 obtains the second image of the camera shooting, in second image, the light hair
The light projection point of injection device is located at the second vertex of the rectangular area, and second vertex and first vertex are the square
Shape region to angular vertex;
Construction unit 54, the position based on light projection point in the first image and second image construct rectangle frame;
Search unit 55 carries out content recognition to the image in the rectangle frame to determine object search, and obtains search
As a result.
Optionally, described device further include:
Prompt unit passes through the movement before the camera shoots the first image and second image
The launching position of terminal notifying light projection point, so that the light projection point of the emitter is projected to respectively in the rectangular area
To angular vertex.
Optionally, the construction unit 54 includes:
Subelement is marked, according to the position of light projection point in the first image, in the same position of second image
It is labeled;
Subelement is constructed, the position of light projection point and the position of mark are respectively as the rectangle in second image
Frame to angular vertex, construct the rectangle frame.
Optionally, described device further include:
Display unit, show the content recognition as a result, so that user refers to according to the input of the result of the content recognition
It enables;
Described search unit 55 is also used to, if detecting, user's input is confirmation instruction, based on the content recognition
As a result it scans for.
Optionally, described device further includes;
Return unit, if detecting, user's input is again photographing instruction, returns and executes the starting mobile terminal
Camera, and start the operation of light emitting devices.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to limit this application.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device and method can pass through others
Mode is realized.For example, system embodiment described above is only schematical, for example, the division of the module or unit,
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be with
In conjunction with or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit or
Communication connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the embodiment of the present invention
Substantially all or part of the part that contributes to existing technology or the technical solution can be with software product in other words
Form embody, which is stored in a storage medium, including some instructions use so that one
Computer equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute this hair
The all or part of the steps of bright each embodiment the method for embodiment.And storage medium above-mentioned include: USB flash disk, mobile hard disk,
Read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic
The various media that can store program code such as dish or CD.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations;Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features;And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (8)
1. a kind of information search method based on image characterized by comprising
Start the camera of mobile terminal, and starts light emitting devices;
The first image for obtaining the camera shooting, in the first image, the light projection point of the light emitting devices
First vertex of the rectangular area locating for object search;
The second image for obtaining the camera shooting, in second image, the light projection point of the light emitting devices
In the second vertex of the rectangular area, second vertex and first vertex are the rectangular area to angular vertex;
Position based on light projection point in the first image and second image constructs rectangle frame;
Content recognition is carried out to determine object search to the image in the rectangle frame, and obtains search result;
It is described that based on the first image and in second image, the position building rectangle frame of light projection point includes:
According to the position of light projection point in the first image, it is labeled in the same position of second image;
The position of light projection point and the position of mark are respectively as the rectangle frame to angular vertex, structure in second image
Build the rectangle frame.
2. the method as described in claim 1, which is characterized in that the method also includes:
Before the camera shoots the first image and second image, light projection is prompted by the mobile terminal
Point launching position so that the light projection point of the emitter be projected to respectively in the rectangular area to angular vertex.
3. the method as described in claim 1, which is characterized in that carry out content recognition in the image in the rectangle frame
After determining object search, before the acquisition search result, the method also includes:
Show the content recognition as a result, so that user inputs according to the result of the content recognition instructs;
If detecting, user's input is confirmation instruction, and the result based on the content recognition scans for.
4. method as claimed in claim 3, which is characterized in that the method also includes;
If detecting, user's input is again photographing instruction, returns to the camera for executing the starting mobile terminal, and open
The operation of dynamic light emitting devices.
5. a kind of information search device based on image characterized by comprising
Start unit for starting the camera of mobile terminal, and starts light emitting devices;
First acquisition unit, for obtaining the first image of the camera shooting, in the first image, the light emitting
The light projection point of device is located at the first vertex of rectangular area locating for object search;
Second acquisition unit, for obtaining the second image of the camera shooting, in second image, the light emitting
The light projection point of device is located at the second vertex of the rectangular area, and second vertex and first vertex are the rectangle
Region to angular vertex;
Construction unit constructs rectangle frame for the position based on light projection point in the first image and second image;
Search unit for carrying out content recognition to the image in the rectangle frame to determine object search, and obtains search knot
Fruit;
The construction unit includes:
Subelement is marked, for the position according to light projection point in the first image, in the same position of second image
It is labeled;
Subelement is constructed, for the position of light projection point in second image and the position of mark respectively as the rectangle
Frame to angular vertex, construct the rectangle frame.
6. device as claimed in claim 5, which is characterized in that described device further include:
Prompt unit, for passing through the movement before the camera shoots the first image and second image
The launching position of terminal notifying light projection point, so that the light projection point of the emitter is projected to respectively in the rectangular area
To angular vertex.
7. device as claimed in claim 5, which is characterized in that described device further include:
Display unit, for show the content recognition as a result, so that user according to the result of the content recognition input refer to
It enables;
Described search unit is also used to, if detect user input be confirmation instruction, the result based on the content recognition into
Row search.
8. device as claimed in claim 7, which is characterized in that described device further includes;
Return unit, if returning for detecting that user's input is again photographing instruction and executing the starting mobile terminal
Camera, and start the operation of light emitting devices.
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