CN106989756B - Method and device for determining position of point of interest - Google Patents
Method and device for determining position of point of interest Download PDFInfo
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- CN106989756B CN106989756B CN201610041592.0A CN201610041592A CN106989756B CN 106989756 B CN106989756 B CN 106989756B CN 201610041592 A CN201610041592 A CN 201610041592A CN 106989756 B CN106989756 B CN 106989756B
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- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3679—Retrieval, searching and output of POI information, e.g. hotels, restaurants, shops, filling stations, parking facilities
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Abstract
The embodiment of the application relates to a method and a device for determining a position of a point of interest, wherein a video acquired by an acquisition tool along the way and a track correspondingly recorded in the acquisition process are stored in advance, and the method comprises the following steps: determining a video frame with an interest point in a video; determining track points corresponding to the video frames from the tracks according to the shooting time of the video frames and the recording time of the tracks corresponding to the videos; determining the advancing direction of the acquisition tool at the track point according to the track point and the positions of the adjacent track points; determining a shooting direction corresponding to the track point according to the traveling direction of the acquisition tool at the track point and the angle value of the included angle between the preset shooting direction and the traveling direction of the acquisition tool; and determining the position of the interest point contained in the video frame according to the position of the track point and the shooting direction. Therefore, the position of the interest point is automatically determined, and the operation efficiency and speed are improved.
Description
Technical Field
The present application relates to the field of electronic maps, and in particular, to a method and an apparatus for determining a location of a point of interest.
Background
At present, electronic maps are increasingly popular, and how to better provide location-based services for users depends on location information of POIs (points of interest) in map data to a greater extent, such as providing the users with POI information around their current locations.
In order to update the position information of the POI in time, a supplier directly sends out an operator to collect the position of the POI on the spot; and after the acquisition is finished, feeding back the acquired position information of the POI to the field workers for processing to obtain the position information of the POI.
Since the field personnel need to collect the position information of a large amount of POI one by one on the spot, and the POI is fed back to the field personnel together for manual processing after the collection is finished, the consumption time delay is large, and the efficiency is low.
Disclosure of Invention
The embodiment of the application provides a method and a device for determining a position of an interest point, and the efficiency and the speed of determining the position of the interest point are improved.
In one aspect, a method for determining a location of a point of interest is provided, where a video captured by a capture tool along a route and a track recorded correspondingly in the capture process are stored in advance, and the method includes:
determining a video frame with an interest point in a video;
determining track points corresponding to the video frames from the tracks according to the shooting time of the video frames and the recording time of the tracks corresponding to the videos;
determining the advancing direction of the acquisition tool at the track point according to the track point and the positions of the adjacent track points;
determining a shooting direction corresponding to the track point according to the traveling direction of the acquisition tool at the track point and the angle value of an included angle between the preset shooting direction and the traveling direction of the acquisition tool;
and determining the position of the interest point contained in the video frame according to the position and the shooting direction of the track point.
Optionally, the determining a video frame in which the interest point exists in the video includes:
acquiring operation information used for confirming that a video frame contains an interest point in the process of playing the video by a user; determining a video frame with the interest point according to the operation information;
or, performing image recognition on video frames contained in the video, and determining the video frames as video frames with interest points when preset interest point characteristic information exists in the video frames.
Optionally, determining a track point corresponding to the video frame from the track according to the shooting time of the video frame and the recording time of the track corresponding to the video, including:
and matching the shooting time of the video frame with the recording time of track points contained in the track corresponding to the video frame, and determining the track point with the recording time being closest to the shooting time of the video frame as the track point corresponding to the video frame.
Optionally, determining the traveling direction of the acquisition tool at the track point according to the track point and the position of the adjacent track point thereof, including:
when the track points comprise front and rear adjacent track points, determining the direction of the front track point of the track point to the direction of the rear track point of the track point as the advancing direction of the acquisition tool at the track point;
when the track point comprises a next track point and does not comprise a previous track point, determining the track point to the direction of the next track point of the track point as the advancing direction of the acquisition tool at the track point;
when the track point contains a preceding track point and does not contain a back track point, will the preceding track point of track point points to the direction of track point, confirm to do gather the direction of travel of instrument at this track point.
Optionally, determining the shooting direction corresponding to the track point according to the traveling direction of the acquisition tool at the track point and the angle value of the included angle between the preset shooting direction and the traveling direction of the acquisition tool, including:
when a camera lens for shooting the video is fixed in an anticlockwise area of the acquisition tool, determining the direction obtained by rotating the acquisition tool in the advancing direction of the track point according to the anticlockwise direction by the angle value as a shooting direction corresponding to the track point;
and when the camera lens for shooting the video is fixed in the clockwise region of the acquisition tool, determining the direction obtained by rotating the angle value of the acquisition tool in the advancing direction of the track point according to the clockwise direction as the shooting direction corresponding to the track point.
Optionally, the angle between the shooting direction and the travel direction of the collecting tool is any one value of 70-110 degrees.
Optionally, determining the position of the interest point included in the video frame according to the position of the track point and the shooting direction includes:
and taking the track point as a starting point, and taking a position point with a distance of a preset length along the shooting direction as the position of the interest point contained in the video frame.
Optionally, the method further comprises:
judging whether the positions of the interest points determined and obtained according to the steps are one or not aiming at each interest point contained in the video frame;
if not, comprehensively processing the multiple positions of the interest point obtained according to the previous steps to obtain a position, and determining the position as the position of the interest point.
In another aspect, an apparatus for determining a location of a point of interest is provided, where a video captured by a capture tool along a route and a track recorded during the capture process are stored in advance, the apparatus includes:
the video frame determining unit is used for determining a video frame with an interest point in a video;
the track point determining unit is used for determining track points corresponding to the video frames from the tracks according to the shooting time of the video frames determined by the video frame determining unit and the recording time of the tracks corresponding to the videos;
the travel direction determining unit is used for determining the travel direction of the acquisition tool at the track point according to the track point determined by the track point determining unit and the positions of the adjacent track points;
the shooting direction determining unit is used for determining the shooting direction corresponding to the track point according to the advancing direction of the acquisition tool at the track point determined by the advancing direction determining unit and the angle value of the included angle between the preset shooting direction and the advancing direction of the acquisition tool;
and the position determining unit is used for determining the position of the interest point contained in the video frame according to the position of the track point determined by the track point determining unit and the shooting direction determined by the shooting direction determining unit.
Optionally, the video frame determining unit is specifically configured to acquire operation information used for determining that a video frame includes an interest point in a process of playing the video by a user; determining a video frame with the interest point according to the operation information; or, performing image recognition on video frames contained in the video, and determining the video frames as video frames with interest points when preset interest point characteristic information exists in the video frames.
Optionally, the track point determining unit is specifically configured to match the shooting time of the video frame with the recording time of the track point included in the track corresponding to the video, and determine the track point with the recording time closest to the shooting time of the video frame as the track point corresponding to the video frame.
Optionally, the traveling direction determining unit is specifically configured to, when the track points include track points adjacent to each other in the front-back direction, determine a direction in which a previous track point of the track points to a next track point of the track points as a traveling direction of the acquisition tool at the track point; when the track point comprises a next track point and does not comprise a previous track point, determining the track point to the direction of the next track point of the track point as the advancing direction of the acquisition tool at the track point; when the track point contains a preceding track point and does not contain a back track point, will the preceding track point of track point points to the direction of track point, confirm to do gather the direction of travel of instrument at this track point.
Optionally, the shooting direction determining unit is specifically configured to determine, when a camera lens for shooting the video is fixed in an anticlockwise area of the capture tool, a direction obtained by rotating the angle value in an anticlockwise direction in a traveling direction of the track point of the capture tool, as the shooting direction corresponding to the track point; and when the camera lens for shooting the video is fixed in the clockwise region of the acquisition tool, determining the direction obtained by rotating the angle value of the acquisition tool in the advancing direction of the track point according to the clockwise direction as the shooting direction corresponding to the track point.
Optionally, the angle between the shooting direction and the travel direction of the collecting tool is any one value of 70-110 degrees.
Optionally, the position determining unit is specifically configured to take, as the position of the interest point included in the video frame, a position point, which is away from the track point by a preset length in the shooting direction, with the track point as a starting point.
Optionally, the method further comprises:
the judging unit is used for judging whether the position of the interest point determined by the position determining unit is one or not aiming at each interest point contained in the video frame;
and the comprehensive processing unit is used for comprehensively processing the plurality of positions of the interest point obtained by the position determining unit to obtain one position if the judgment result of the judging unit is negative, and determining the position as the position of the interest point.
The application provides a method for determining the position of an interest point, wherein a video acquired by an acquisition tool along the way and a track corresponding to a record in the acquisition process are stored in advance, the acquisition tool is used for shooting a video to a POI along the way and recording the track of the acquisition tool at the same time, after a video frame with the interest point in the video is identified, a track point corresponding to the video frame is directly determined from the track when the video frame is shot, and the position of the interest point in the video frame is determined according to the position and the shooting direction of the track point. Adopt this application technical scheme, can gather the POI video fast along the way through gathering the instrument, determine the position of POI according to the track of POI video and record along the way again automatically, improve the speed and the efficiency of confirming the POI position, overcome prior art and need gather personnel one by one and gather on the spot and carry out manual handling by the interior person again and obtain the POI position and the lower problem of efficiency that exists.
Drawings
FIG. 1 is a flowchart of a method for determining a location of a point of interest according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a recorded trace of a capture tool provided by an embodiment of the present application;
fig. 3 is a schematic diagram of determining a traveling direction of a trace point according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram for determining a track point shooting direction according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram illustrating a position of a point of interest determined according to a shooting direction and a position of a track point according to an embodiment of the present application;
FIG. 6 is a flow chart of another method for determining a location of a point of interest according to an embodiment of the present application;
FIG. 7 is a schematic structural diagram of an apparatus for determining a location of a point of interest according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of another apparatus for determining a position of a point of interest according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For the purpose of facilitating understanding of the embodiments of the present application, the following description will be made in terms of specific embodiments with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.
When the method for determining the position of the point of interest provided by the embodiment of the application is applied, a video acquired along the path by an acquisition tool and a track correspondingly recorded in the acquisition process need to be stored in advance, wherein the acquisition tool specifically can be a vehicle provided with a camera for shooting the video and a recorder for recording a driving track, the vehicle can be but not limited to a bicycle, a motorcycle, an automobile and the like, and the type of the acquisition tool is not strictly limited in the embodiment of the application.
The collection personnel can use the vehicle provided with the camera and the recorder to run along the way in advance, and start the camera and the recorder simultaneously in the running process, so that POI around the way can be shot through the camera, the running track of the vehicle along the way can be recorded through the recorder, and the corresponding relation between the video shot along the way and the running track can be stored.
Taking the vehicle as an example of a bicycle, a camera is fixedly mounted on a handlebar of the bicycle, and a lens of the camera keeps a fixed angle value with the front of a head of the bicycle, so as to ensure that a shooting direction of the lens of the camera keeps a fixed angle value with a traveling direction of the bicycle during traveling of the bicycle, wherein the fixed angle value can be set to 70-110 degrees, preferably 90 degrees, namely the lens of the camera is kept perpendicular to the front of the bicycle, so that videos shot along the way are POI information on one side of a traveling road of the bicycle. The direction of the camera lens is the shooting direction.
Fig. 1 is a flowchart of a method for determining a location of a point of interest according to an embodiment of the present application, where the method may be based on the above specific application scenario, with reference to fig. 1, and the method includes:
In step 101, determining a video frame having an interest point in a video, which may be implemented as follows:
the method comprises the steps of 1, obtaining operation information used for confirming that a video contains an interest point in the process of playing the video by a user, and determining a video frame with the interest point according to the operation information.
For example, an operation instruction may be preset, and once an operation instruction initiated by a user to operate a video in playing the video is received, the operation instruction is compared with the preset operation instruction, and if the operation instruction is consistent with the preset operation instruction, the operation instruction is analyzed to obtain a video frame with an interest point. The preset operation instruction can be click video, pause video, for example: the operation instruction is a video clicking operation instruction, and when a user browses that an interest point exists in a current picture of the video in the process of playing the video, the current picture is clicked through a mouse or touch, and the operation instruction for clicking the video is generated. And analyzing the operation instruction to obtain a video frame corresponding to the clicked picture, and determining the video frame as a video frame with the interest point.
And 2, performing image identification on the video frames contained in the video, and determining the video frames as the video frames with the interest points when the preset interest point characteristic information exists in the video frames.
In this embodiment, an interest point feature library may be preset, and text information (such as a name, a telephone, an address, and the like) and/or image information and the like corresponding to an interest point are stored in the feature library. Processing images of each video frame contained in the video, identifying character information and/or image information contained in the video frame, matching the identified character information and image information with information in an interest point feature library, and determining an interest point which is successfully matched as an interest point in the video frame.
For example, it is assumed that the interest point feature library stores text information corresponding to each interest point; and respectively matching the text information identified in the video frame with the text information corresponding to each interest point in the interest point feature library, and determining the interest point which is successfully matched with the interest point corresponding to the text information with the highest matching degree with the identified text information. Preferably, a matching degree threshold (for example, 80%) may also be preset, and if the matching degree of the text information in the interest point feature library with the highest matching degree of the identified text information is smaller than the matching degree threshold, the identified text information is considered not to be the text information corresponding to the interest point; and if the matching degree of the character information in the interest point feature library with the highest matching degree of the identified character information is greater than or equal to the threshold value of the matching degree, determining the interest point corresponding to the character information with the highest matching degree of the identified character information in the interest point feature library as the interest point contained in the video frame.
Preferably, in order to increase the processing speed, in the foregoing mode 2, a video frame included in the video may be thinned, for example, one frame is extracted every 15 frames, the image processing is performed on the thinned video frame to identify text information and/or image information included in the video frame, the identified text information and image information are matched with information in the interest point feature library, and the interest point that is successfully matched is determined as the interest point existing in the video frame.
And step 102, determining track points corresponding to the video frames from the tracks according to the shooting time of the video frames and the recording time of the tracks corresponding to the videos.
In the embodiment of the application, the shooting time can be recorded in real time in the process of shooting the video, so that each frame of video frame of the video can correspond to one shooting time, and the recording time information, the position information and the like of each track point in the track can be stored correspondingly in the process of recording the track. Therefore, in the foregoing step 102, the specific implementation can be as follows: and matching the shooting time of the video frame with the recording time of track points contained in the track corresponding to the video, and determining the track point with the recording time being closest to the shooting time of the video frame as the track point corresponding to the video frame. For example, if the shooting time corresponding to a certain video frame shot at a certain date is 10:29:30, and the recording times corresponding to the track points P1, P2, …, Pi, P (i +1), … Pn included in the track corresponding to the video are 10:20:30, 10:20:32, …, 10:29:30, 10:29:32, …, it is determined that the recording time of Pi is closest to the shooting time of the video frame, and therefore Pi is the track point corresponding to the video frame. As shown in fig. 2.
And 103, determining the traveling direction of the acquisition tool at the track point according to the track point and the positions of the adjacent track points.
Fig. 3 is a schematic diagram of determining a traveling direction of a track point provided in the embodiment of the present application, referring to fig. 3, where a track point a is a starting point of a track, and a track point G is an end point of the track, and when it is determined in step 102 that a track point corresponding to a video frame is a track point E, because the track point E has front and rear adjacent track points, the former track point is a track point D, and the latter track point is a track point F, the track point D is pointed to the direction of the track point F, and the traveling direction of the acquisition tool at the track point E is determined; when the track point corresponding to the video frame is determined to be the track point A in the step 102, the track point A comprises a next track point and does not comprise a previous track point, and the next track point is the track point B, so that the track point A points to the direction of the track point B and is determined to be the advancing direction of the acquisition tool at the track point A; when the track point determined in step 102 is track point G, because track point G contains a previous track point and does not contain a subsequent track point, its previous track point is track point F, and therefore the direction of track point F pointing to track point G is determined as the direction of travel of the acquisition tool at this track point G.
And step 104, determining the shooting direction corresponding to the track point according to the advancing direction of the acquisition tool at the track point and the angle value of the included angle between the preset shooting direction and the advancing direction of the acquisition tool.
Fig. 4 is a schematic diagram of determining a shooting direction of a track point according to an embodiment of the present application, and referring to fig. 4, where o denotes the track point corresponding to a video frame, k denotes a traveling direction of the capture tool at the track point, and an angle value of an included angle between a preset shooting direction and the traveling direction of the capture tool is w (where w is one of 70 ° to 110 °, and preferably w is 90 °). When a camera lens for shooting the video is fixed in a counterclockwise region of the acquisition tool, rotating k counterclockwise by w to obtain l1 representing a shooting direction corresponding to the track point o; similarly, when the camera lens of the video is fixed in the clockwise region of the acquisition tool, k is rotated clockwise by w, and l2 is obtained to indicate the shooting direction corresponding to the track point o.
And 105, determining the position of the interest point contained in the video frame according to the position of the track point and the shooting direction.
In this embodiment of the application, the track point may be used as a starting point, and a position point which is away from the track point by a preset length along the shooting direction is taken as a position of the interest point included in the video frame. As shown in fig. 5, if L1 is the shooting direction of the track point o and L is a preset length, the selected position point P is the position of the interest point included in the video frame.
L can be flexibly set according to the shooting distance of the camera, and the set value of L is large if the shooting distance is long. Since the photographing distance of the camera is limited, for example, a general camera can photograph a subject having a distance ranging from 10 to 25 meters, the preset length L may be set to 10 meters.
When one video frame includes a plurality of interest points, the same preset length may be set or different preset lengths may be set for different interest points.
Preferably, in the embodiment of the present invention, the same point of interest may exist in multiple video frames, and in order to obtain an accurate location of the point of interest, the flow shown in fig. 1 may further include steps 106 to 108, as shown in fig. 6:
In step 107, the specific implementation may be as follows: and calculating the longitude average value of the plurality of positions, calculating the latitude average value of the plurality of positions, and determining the obtained longitude average value and latitude average value as the longitude and latitude coordinates of the position obtained by the comprehensive processing. Or, one position is selected from the plurality of positions as the position of the interest point.
Fig. 7 is a block diagram of an apparatus for determining a location of a point of interest according to an embodiment of the present application, where the apparatus includes:
the storage unit 500 is used for storing videos acquired by the acquisition tool along the way and corresponding recorded tracks in the acquisition process in advance;
a video frame determining unit 501, configured to determine a video frame in which an interest point exists in a video;
a track point determining unit 502, configured to determine a track point corresponding to the video frame from the track according to the shooting time of the video frame determined by the video frame determining unit 501 and the recording time of the track corresponding to the video in the storage unit 500;
the traveling direction determining unit 503 is configured to determine the traveling direction of the acquisition tool at the track point according to the track point determined by the track point determining unit 502 and the position of the adjacent track point;
a shooting direction determining unit 504, configured to determine a shooting direction corresponding to the track point according to the traveling direction of the acquisition tool at the track point determined by the traveling direction determining unit 503 and an angle value of an included angle between a preset shooting direction and the traveling direction of the acquisition tool;
a position determining unit 505, configured to determine a position of the interest point included in the video frame according to the position of the track point determined by the track point determining unit 502 and the shooting direction determined by the shooting direction determining unit 504.
Optionally, the video frame determining unit 501 is specifically configured to acquire operation information used for determining that a video frame includes an interest point in the process of playing the video by a user; determining a video frame with the interest point according to the operation information; or, performing image recognition on video frames contained in the video, and determining the video frames as video frames with interest points when preset interest point characteristic information exists in the video frames.
Optionally, the track point determining unit 502 is specifically configured to match the shooting time of the video frame with the recording time of the track point included in the track corresponding to the video, and determine the track point with the recording time closest to the shooting time of the video frame as the track point corresponding to the video frame.
Optionally, the traveling direction determining unit 503 is specifically configured to, when the track points include track points adjacent to each other in the front-back direction, determine a direction in which a previous track point of the track points to a next track point of the track points as a traveling direction of the acquisition tool at the track point; when the track point comprises a next track point and does not comprise a previous track point, determining the track point to the direction of the next track point of the track point as the advancing direction of the acquisition tool at the track point; when the track point contains a preceding track point and does not contain a back track point, will the preceding track point of track point points to the direction of track point, confirm to do gather the direction of travel of instrument at this track point.
Optionally, the shooting direction determining unit 504 is specifically configured to determine, when the camera shooting the video is fixed in the counterclockwise region of the acquisition tool, a direction obtained by rotating the angle value in the counterclockwise direction in the traveling direction of the track point of the acquisition tool, as the shooting direction corresponding to the track point; and when the camera for shooting the video is fixed in the clockwise region of the acquisition tool, determining the direction obtained by rotating the angle value of the acquisition tool in the advancing direction of the track point according to the clockwise direction as the shooting direction corresponding to the track point.
Optionally, the angle between the shooting direction and the travel direction of the collecting tool is any one of 70-110 degrees, and preferably, the angle is 90 degrees.
Optionally, the position determining unit 505 is specifically configured to take, with the track point as a starting point, a position point that is away from the track point by a preset length along the shooting direction as a position of the interest point included in the video frame.
Optionally, the apparatus further includes a determining unit 506 and an integrating processing unit 507, as shown in fig. 8:
a determining unit 506, configured to determine, for each interest point included in the video frame, whether the position of the interest point determined by the position determining unit 505 is one;
an integrated processing unit 507, configured to, when the determination result of the determining unit 506 is negative, perform integrated processing on the multiple positions of the point of interest obtained by the position determining unit 505 to obtain one position, and determine the position as the position of the point of interest.
Those of skill would further appreciate that the various illustrative objects and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.
Claims (13)
1. A method for determining a location of a point of interest, wherein a video captured by a capture tool along the way and a track recorded correspondingly during the capture process are stored in advance, the method comprising:
determining a video frame with an interest point in a video;
determining track points corresponding to the video frames from the tracks according to the shooting time of the video frames and the recording time of the tracks corresponding to the videos;
determining the advancing direction of the acquisition tool at the track point according to the track point and the positions of the adjacent track points;
determining a shooting direction corresponding to the track point according to the traveling direction of the acquisition tool at the track point and the angle value of an included angle between the preset shooting direction and the traveling direction of the acquisition tool;
and taking the track point as a starting point, and taking a position point with a distance of a preset length along the shooting direction as the position of the interest point contained in the video frame.
2. The method of claim 1, wherein the determining a video frame in which a point of interest exists in the video comprises:
acquiring operation information used for confirming that a video frame contains an interest point in the process of playing the video by a user;
determining a video frame with the interest point according to the operation information;
alternatively, the first and second electrodes may be,
and performing image identification on video frames contained in the video, and determining the video frames as the video frames with the interest points when the preset interest point characteristic information exists in the video frames.
3. The method of claim 1, wherein determining track points corresponding to the video frames from the tracks according to the shooting time of the video frames and the recording time of the tracks corresponding to the video comprises:
and matching the shooting time of the video frame with the recording time of track points contained in the track corresponding to the video, and determining the track point with the recording time being closest to the shooting time of the video frame as the track point corresponding to the video frame.
4. The method of claim 1, wherein determining the direction of travel of the capture tool at the track point based on the position of the track point and its neighboring track points comprises:
when the track points comprise front and rear adjacent track points, determining the direction of the front track point of the track point to the direction of the rear track point of the track point as the advancing direction of the acquisition tool at the track point;
when the track point comprises a next track point and does not comprise a previous track point, determining the track point to the direction of the next track point of the track point as the advancing direction of the acquisition tool at the track point;
when the track point contains a preceding track point and does not contain a back track point, will the preceding track point of track point points to the direction of track point, confirm to do gather the direction of travel of instrument at this track point.
5. The method according to any one of claims 1 to 4, wherein determining the shooting direction corresponding to the track point according to the traveling direction of the acquisition tool at the track point and the angle value of the included angle between the preset shooting direction and the traveling direction of the acquisition tool comprises:
when a camera lens for shooting the video is fixed in an anticlockwise area of the acquisition tool, determining the direction obtained by rotating the acquisition tool in the advancing direction of the track point according to the anticlockwise direction by the angle value as a shooting direction corresponding to the track point;
and when the camera lens for shooting the video is fixed in the clockwise region of the acquisition tool, determining the direction obtained by rotating the angle value of the acquisition tool in the advancing direction of the track point according to the clockwise direction as the shooting direction corresponding to the track point.
6. The method of any one of claims 1 to 4, wherein the angle between the shooting direction and the direction of travel of the acquisition tool has a value of any one of 70 ° -110 °.
7. The method according to any one of claims 1 to 4, wherein after taking the track point as a starting point and taking a position point which is away from the track point by a preset length along a shooting direction as a position of the interest point contained in the video frame, the method further comprises:
judging whether the position of each interest point contained in a video frame is one or not;
if not, comprehensively processing a plurality of positions of the interest point to obtain one position, and determining the position as the position of the interest point.
8. An apparatus for determining a location of a point of interest, the apparatus comprising:
the storage unit is used for pre-storing videos acquired by the acquisition tool along the way and corresponding recorded tracks in the acquisition process;
the video frame determining unit is used for determining a video frame with an interest point in a video;
the track point determining unit is used for determining track points corresponding to the video frames from the tracks according to the shooting time of the video frames determined by the video frame determining unit and the recording time of the tracks corresponding to the videos in the storage unit;
the travel direction determining unit is used for determining the travel direction of the acquisition tool at the track point according to the track point determined by the track point determining unit and the positions of the adjacent track points;
the shooting direction determining unit is used for determining the shooting direction corresponding to the track point according to the advancing direction of the acquisition tool at the track point determined by the advancing direction determining unit and the angle value of the included angle between the preset shooting direction and the advancing direction of the acquisition tool;
and the position determining unit is used for taking the track point as a starting point and taking a position point which is away from the track point along the shooting direction and has the length of a preset length as the position of the interest point contained in the video frame.
9. The apparatus of claim 8, wherein the video frame determination unit is specifically configured to:
acquiring operation information used for confirming that a video frame contains an interest point in the process of playing the video by a user; determining a video frame with the interest point according to the operation information;
or, performing image recognition on video frames contained in the video, and determining the video frames as video frames with interest points when preset interest point characteristic information exists in the video frames.
10. The apparatus according to claim 8, wherein the trajectory point determining unit is specifically configured to:
and matching the shooting time of the video frame with the recording time of track points contained in the track corresponding to the video, and determining the track point with the recording time being closest to the shooting time of the video frame as the track point corresponding to the video frame.
11. The apparatus of claim 8, wherein the direction of travel determination unit is specifically configured to:
when the track points comprise front and rear adjacent track points, determining the direction of the front track point of the track point to the direction of the rear track point of the track point as the advancing direction of the acquisition tool at the track point;
when the track point comprises a next track point and does not comprise a previous track point, determining the track point to the direction of the next track point of the track point as the advancing direction of the acquisition tool at the track point;
when the track point contains a preceding track point and does not contain a back track point, will the preceding track point of track point points to the direction of track point, confirm to do gather the direction of travel of instrument at this track point.
12. The apparatus according to any of the claims 8 to 11, wherein the shooting direction determining unit is specifically configured to:
when a camera lens for shooting the video is fixed in an anticlockwise area of the acquisition tool, determining the direction obtained by rotating the acquisition tool in the advancing direction of the track point according to the anticlockwise direction by the angle value as a shooting direction corresponding to the track point;
and when the camera lens for shooting the video is fixed in the clockwise region of the acquisition tool, determining the direction obtained by rotating the angle value of the acquisition tool in the advancing direction of the track point according to the clockwise direction as the shooting direction corresponding to the track point.
13. The apparatus of any of claims 8 to 11, further comprising:
the judging unit is used for judging whether the position of the interest point determined by the position determining unit is one or not aiming at each interest point contained in the video frame;
and the comprehensive processing unit is used for comprehensively processing the plurality of positions of the interest point obtained by the position determining unit to obtain one position and determining the position as the position of the interest point when the judgment result of the judging unit is negative.
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| CN110321885A (en) * | 2018-03-30 | 2019-10-11 | 高德软件有限公司 | A kind of acquisition methods and device of point of interest |
| CN111488771B (en) * | 2019-01-29 | 2023-06-30 | 阿里巴巴集团控股有限公司 | OCR hooking method, device and equipment |
| CN110457571B (en) * | 2019-06-25 | 2022-12-30 | 腾讯科技（深圳）有限公司 | Method, device and equipment for acquiring interest point information and storage medium |
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