KR101869905B1 - Video playing method and video player - Google Patents

Abstract

There is provided an image reproducing method and an image reproducing apparatus for changing a reproducing method between an event generating section and an event non-generating section. According to an aspect of the present invention, there is provided an image playback method comprising: searching a database including event information of an image and time information corresponding to the event information; extracting the time information from the database; Dividing the image into a first section and a second section based on the first reproduction type, and reproducing the first section according to a first reproduction type and reproducing the second section according to a second reproduction type.

Description

TECHNICAL FIELD The present invention relates to a video playing method and a video player,

The present invention relates to an image reproducing method and apparatus, and more particularly, to an image reproducing method and apparatus capable of reproducing an image while automatically changing a reproduction type such as a reproduction speed of an image in a predetermined section.

In the existing NVR / DVR P playback method, the user continuously reproduces the image at the speed first determined by the user from 1x speed to 64x speed until the user directly changes the image playback speed. That is, if the user initially designates the playback speed at the 2x speed, the playback speed is changed only when the user changes the speed until the user changes the playback speed again.

However, in this image reproduction method, if the image reproduction speed is set to be fast for quickly viewing a portion determined to be unimportant by the user, there is a problem that the image having important information in the fast passing image, that is, there was. Particularly, such a problem may occur particularly frequently in the case of playing back an image occurring in a short section due to an unexpected event such as a CCTV image. In this case, the purpose of checking the image by reproducing the CCTV recorded image itself may be diluted .

In order to solve such a problem, Japanese Unexamined Patent Application Publication No. 2010-039877 discloses a summary content generation apparatus that generates summary content at double speed that allows a scene included in a target video to be grasped in a short time. The apparatus for generating summary contents includes image signal analyzing means for analyzing image and audio signals in an image and dividing the image into a plurality of intervals, event detecting means for detecting, as an event, A summary section playback speed determination section for determining a playback speed for each section based on the detected event, and a digest image generation section for generating summary contents at the playback speed.

However, the summary content generation apparatus analyzes an audio and an image signal in the apparatus and detects an event. When an error occurs in the signal analysis, the playback speed of an interval in which an important event occurs may not be appropriately determined Respectively. Also, this prior art does not disclose an image reproducing method and apparatus for automatically changing a reproduction speed using an image database such as a CCTV recorded image, in which the image itself is stored as a database.

Japanese Patent Application No. 2010-039877 Korean Patent Publication No. 1999-0081317 Korean Published Patent Application No. 2007-0066651 Japanese Published Patent Application No. 2011-008508

SUMMARY OF THE INVENTION The present invention is directed to an image playback method for dividing an image into sections and reproducing the sections in different ways, the method comprising: And to provide a video reproducing method capable of dividing a section that is not played back.

Another object of the present invention is to provide a video reproducing apparatus which can easily and accurately extract time information of a specific event from various types of databases stored in advance and reproduce images in different ways for each section.

The technical objects of the present invention are not limited to the above-mentioned technical problems, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an image playback method comprising: searching a database including event information of an image and time information corresponding to the event information; Extracting the time information, classifying the image into a first section and a second section based on the extracted time information, reproducing the first section according to a first reproduction type, And reproducing it according to the type.

According to another aspect of the present invention, there is provided an image reproducing apparatus including a database including event information of an image and time information corresponding to the event information, a display unit for reproducing the image, A search section for searching the database and extracting the time information, a section extracting section for classifying the image into a first section and a second section based on the time information, And controlling the display unit to reproduce the second section according to the second reproduction type.

According to the present invention as described above, it is possible to precisely search for a section in which a desired event occurs and a section in which a desired event occurs, searching only a section in which a desired event occurs, at a constant speed, If the desired event does not occur, the segment can be played back quickly, not played back, or replaced with a still image, so that the user can view the image quickly without missing important scenes.

In addition, unlike the prior art in which a user has to individually check images of a section in which a desired event occurs in a database, the entire image is reproduced at one time, The plot can be grasped more effectively.

1 is a flowchart illustrating an image reproducing method according to an embodiment of the present invention.
2 is a diagram showing an embodiment of a database to be searched in the video playback method of the present invention.
3 is a diagram showing another embodiment of a database to be searched in the video playback method of the present invention.
4 to 6 are views illustrating a method of reproducing an image according to various embodiments of the present invention.
7 is a block diagram showing the configuration of an image reproducing apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Hereinafter, an image reproducing method according to various embodiments of the present invention will be described with reference to FIGS. 1 to 6. FIG.

As shown in FIG. 1, the image reproducing method of the present invention includes a step of searching a database (S120), extracting time information from a database (S130), classifying an image into a first section and a second section S140) and reproducing the first and second sections according to the respective reproduction types (S150).

In the image reproducing method of the present invention, firstly, the previously stored database including the event occurrence information about the image is searched (S120), and time information about the event having the event information to be observed is extracted from the database (S130). The image is classified into a first interval and a second interval based on the extracted time information (S140). At this time, at least one of the predetermined events, that is, the event having the event information to be observed, And the second interval is an interval during which no event having the event information to be observed occurs. Thereafter, in the video reproduction method of the present invention, the first section is reproduced according to the first reproduction type, and the second section is reproduced according to the second reproduction type different from the first reproduction type (S150). As a result, when the image is reproduced from the first section to the second section or from the second section to the first section, the reproduction type can be automatically changed without user's operation.

According to an exemplary embodiment, the method may further include a step (S110) of receiving search information including a feature of an image to be observed prior to the step of searching for a database (S120) as shown in FIG. The search information may be a characteristic representing an event to be viewed by a user, and the characteristic may be one of information in an event. Specifically, the event information may include an event kind, a place where an event occurred, a frequency of occurrence of an event, a part where an event occurs in a screen frame, and the like.

For example, the search information may include an event type. The event type is a specific event or important event to be observed. Examples of the event types include virtual line passing detection, face detection of a character, or recognition of a specific license plate among license plates in a video. In this case, the image reproducing method of the present invention can search for the above-mentioned kind of event in the database.

As another example, the search information may include whether an event has occurred or not. In this case, the user is interested in whether or not any event has occurred regardless of the event type, and the video playback method of the present invention can search all the events occurring in the video from the database.

As another example, the search information may include a portion where an event occurs in a frame. At this time, the event may be designated as a specific kind, or may be specified to include all events occurring in a specific portion of a screen frame. In this case, the image reproducing method of the present invention can search for a specific event or all events occurring in the specific part.

In the video playback method of the present embodiment, the search information is input and the database is searched using the event information (S120). In this way, an interval in which an event having a characteristic desired to be observed by the user occurs in the image is retrieved from the database, and the playback method between the interval and the interval can be changed.

The database to be searched in the search of the database included in the image playback method of the present invention includes event information of the image and time information corresponding to the event information. The type of event, the place where the event occurred, the number of times the event occurred, and the part where the event occurs in the screen frame. The database includes time information corresponding to each event information, and the time information may typically be an event occurrence start time and an end time.

2 and 3 show a database including event information and time information according to various embodiments. Specifically, the database may be an event database 210 or a motion database 220, respectively.

2, when the database to be searched according to the present invention is the event database 210 for the image 1, the event information included in the database 210 may include one or more different event types . According to one embodiment, the event database 210 may include three event types (Event A, Event B, and Event C). The event database 210 includes, for each event type, a time at which the event starts to occur and an end time. According to the event database 210, the event A occurs for the first time from 1 minute 33 seconds to 5 minutes and 42 seconds from the playback time of the video 1, and once again from 25 minutes 0 seconds to 38 minutes and 24 seconds Able to know.

In the case of searching the database 210 according to the present embodiment, the search information input for database search may be the occurrence of an event type or an event.

If the user's interest is all the events occurring in the image 1, the user can input whether or not the event occurred with the search information. In this case, the video playback method of the present invention can search all the event types included in the event database 210 of the video 1, and extract the start time and end time corresponding to each event. As shown in FIG. 2, in the image 1, a total of four events are generated regardless of the event type, all the intervals in which the four events occur are classified into the first interval and the remaining intervals are classified into the second interval have. Thereafter, the first section is reproduced in accordance with the first reproduction type, and the second section is reproduced in accordance with the second reproduction type.

Unlike the above-described embodiment, if the user's interest is limited to the event A, not the event generated in the image 1, the user can input the event type of event A as the search information. In this case, the video playback method of the present invention searches only the event A among the event database 210 of the video 1, and extracts a start time and an end time corresponding to the event A. As shown in FIG. 2, the event A occurs once in the interval of 1 minute 33 seconds to 5 minutes and 42 seconds and in the interval of 25 minutes to 38 minutes and 24 seconds in the image 1, Only the 42-second section and the 25-minute to 38-minute 24-second section can be classified as the first section. All the remaining sections are classified into the second section and reproduced by a method different from the reproducing method of the first section.

3, when the database to be searched according to the present invention is the motion database 220 for the image 2, the event information included in the database 220 includes the motion of each frame of the image 2 And may include location information that occurs.

According to one embodiment, the motion database 220 may include motion information of each frame as event information, as shown in FIG. The motion information of each frame is obtained by dividing the screen of one frame of the image 2 into a predetermined area and arranging the areas in order, and when the motion occurs in each area and the case where the motion does not occur, Lt; / RTI > According to one embodiment, the size of the predetermined area may be one pixel, and an area where motion is generated may be represented by an active value (1) and an area where no motion occurs may be represented by an inactive value (0).

The motion information may be stored for each frame of the image 2, and the time information corresponding to each motion information may be a time at which each frame is reproduced according to a frame rate of the image.

According to one embodiment, the user can input information such as 'event in which motion occurs in the area a of the screen of the image 2' as the search information. In this case, in the searching of the database, the frame having the active value (1) corresponding to the area a of the screen among the motion information of each frame is searched, and in the step of extracting the time information from the database, The time information corresponding to the frame having the active value (1) corresponding to the area a can be extracted.

In the case of the motion database 220 shown in Fig. 3, it can be seen that only the motion information corresponding to the frames 1 to 35 of the motion information of the image 2 has the active value (1) have. Accordingly, the frame in which the event occurs in the region a is the frame 1 to the frame 35, and as a result, the time information of 1 to 3 minutes and 14 seconds, which is the time information of the interval, is extracted and only the interval can be classified into the first interval.

As described above, in the image reproducing method of the present invention, the first section is reproduced in accordance with the first reproduction type, and the second section is reproduced in accordance with the second reproduction type. Various embodiments of the first reproduction type and the second reproduction type are shown in Figs. 4 to 6. Fig.

According to one embodiment, in the image reproduction method of the present invention, the first reproduction type is set to reproduce an image at a first reproduction speed, and the second reproduction type can be set to reproduce an image at a second reproduction speed. At this time, the second reproduction speed may be faster than the first reproduction speed. A reproduction method of the video 1 according to the present embodiment is shown in Fig.

As described above, the image 1 may be classified as shown in the upper part of FIG. 4 according to the event database 210 of FIG. That is, when the video 1 is reproduced, the event A occurs twice, the event B and the event C occur once, and the section where the events occur is designated as the first section. According to the present embodiment, the first section can be reproduced at the normal speed (1x) according to the first reproduction type set to reproduce the first section at the normal speed (1x speed), and the remaining second section can be reproduced 2 can be reproduced at a higher speed than the first section according to the second reproduction type set to reproduce the second section at a higher speed.

At this time, according to one embodiment, as shown in FIG. 4, the playback speed of the second playback type may be a specific speed preset by the user. 4 shows a case in which the user sets the second reproduction type in advance so as to reproduce the second section at triple speed. Meanwhile, according to another embodiment, the reproduction speed of the second reproduction type may be the maximum speed. For example, when the maximum playback speed supported by the apparatus for implementing the video playback method of the present invention is 64 times, the second playback type can be set to play back the second section at 64 times speed.

According to another embodiment, as shown in Fig. 5, the second reproduction type may be set not to reproduce the second section. That is, in this embodiment, after the playback object image is classified into the first section and the second section, only the first section may be reproduced in order. When the video 1 is reproduced in accordance with the video playback method of the present embodiment, four first intervals where the event A, the event B, the event A, and the event C, which occur when the video 1 is reproduced, The second section located therebetween may not be reproduced.

According to another embodiment, the second playback type may be set to play a representative still image for a predetermined time instead of the second section. 6, when the image 1 is reproduced according to the image reproducing method of the present embodiment, the image 1 is positioned between four first intervals where the event A, the event B, the event A, and the event C respectively The representative still image can be reproduced for a short time instead of reproducing the second section in the second section.

In this case, according to one embodiment, the representative still image may be an image previously designated by the user. The user can preset the specific image to be reproduced in an interval in which an event to be observed by the user does not occur. According to another embodiment, the representative still image may be one frame of the second section. The one frame may be extracted from each second section, where one frame may be the most frequently occurring frame in each second section. According to an exemplary embodiment, the most frequently occurring frame may be extracted using a motion database as shown in FIG. 3. In one frame among frames having motion information that occurs most frequently in each second interval, This can be selected as representative still image.

Hereinafter, an image reproducing apparatus according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 7, the video playback apparatus according to the present embodiment includes a database 200 including video event information and time information corresponding to the event information. The database 200 may be an event database or a motion database as described above. The database 200 includes a recording apparatus 10 for recording an image to be played back according to the present invention, And may be stored in the storage unit 20.

In addition, the image reproducing apparatus of the present invention may include a search unit 310 for searching the database 200 and extracting time information, a section extracting unit 310 for classifying the image into a first section and a second section based on the time information, (320). As described above, the search unit 310 may receive search information including event information of an event to be searched in the database 200 from a user. The section extractor 320 extracts time information of events matched with the search information based on the search of the search unit 310 and then stores a section in which at least one of the searched events is generated as a first section, And the second image is classified into the second image.

The image reproducing apparatus of the present invention includes a display unit 400 for reproducing a target image and information on the first interval and the second interval from the interval extracting unit 320 and receiving the first interval according to a first playback type And controls the display unit (400) to reproduce the second section according to the second reproduction type. At this time, the first reproduction type and the second reproduction type are different from each other.

According to one embodiment, the first reproduction type is set to reproduce the first section at a first reproduction speed, and the second reproduction type is set to reproduce the second section at a second reproduction speed that is faster than the first reproduction speed Can be set to play. According to another embodiment, the second reproduction type may be set not to reproduce the second section, and in accordance with another embodiment, the second reproduction type may include a representative still image As shown in FIG.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

200, 210, 220: Database
10: Recording device
20:
310:
320:
330:
400:

Claims (12)

Searching a database including event information of the image and time information corresponding to the event information;
Extracting the time information for an event having event information to be observed in the database based on the event information;
Classifying the image into a first section in which at least one of events having the event information to be observed is generated based on the extracted time information and a second section in which an event having the event information to be observed does not occur, ; And
Reproducing the first section according to the first reproduction type and reproducing the second section according to the second reproduction type. The method according to claim 1,
Wherein the event information of the database includes one or more different event types,
Wherein the database includes time information corresponding to each event type,
Wherein the time information includes a start time and an end time of each event. delete delete delete The method according to claim 1,
Wherein the first reproduction type is set to reproduce the first section at a first reproduction speed and the second reproduction type is set to reproduce the second section at a second reproduction speed,
Wherein the second reproduction speed is higher than the first reproduction speed. delete delete A database including event information of a video and time information corresponding to the event information;
A display unit for reproducing the image;
A search unit for searching the database based on the event information and extracting the time information for an event having event information to be observed;
A first section in which at least one of events having the event information to be observed is generated based on the time information, and a second section in which an event having the event information to be observed is not generated, ; And
And a control section for controlling the display section to reproduce the first section according to the first reproduction type and reproduce the second section according to the second reproduction type. 10. The method of claim 9,
Wherein the first reproduction type is set to reproduce the first section at a first reproduction speed and the second reproduction type is set to reproduce the second section at a second reproduction speed,
Wherein the second reproduction speed is higher than the first reproduction speed. delete 10. The method of claim 9,
Wherein the second reproduction type is set to reproduce a representative still image for a predetermined time instead of the second section or is set not to reproduce the second section.

Images