JP2013182628A - Error detection device, reproduction device, and error detection program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a load of confirmation by a user after automatically detecting an error.SOLUTION: An error detection device comprises: an acquisition unit for acquiring information on a moving image to be processed; a detection unit for detecting an error occurring at least in a field unit concerning the moving image; a display unit for performing display based on a detection result by the detection unit; and a notification unit for notifying a user by displaying, on the display unit, a separately displayed image on which images of a top field and a bottom field in a frame including the error are displayed in parallel when the error in the field unit is detected by the detection unit.

Description

  The present invention relates to an error detection device, a playback device, and an error detection program.

  In moving images, it is known that errors such as noise and missing data occur due to various circumstances such as errors during encoding, errors due to transmission errors, and errors during editing. If the above-described error occurs in the moving image, the image is disturbed when the moving image is reproduced. Such an error can be detected visually, but there is a problem that it takes time and effort to detect. In addition, oversight may occur if careful confirmation is not performed.

  Therefore, it is considered to automate the detection of such errors. For example, in the invention of Patent Document 1, a technique for automatically detecting blinking noise which is one of the errors described above is disclosed.

Japanese Patent No. 4476125

  By the way, even when an error is automatically detected as in Patent Document 1 described above, it is necessary for the user to confirm details of detection by visual observation or the like, and this confirmation also takes time and effort.

  An object of the present invention is to reduce the burden of confirmation by a user after automatically detecting an error.

  An error detection apparatus according to an aspect includes an acquisition unit that acquires information of a moving image to be processed, a detection unit that detects an error that occurs at least in a field unit for the moving image, and a detection result by the detection unit When the field unit error is detected by the display unit that performs display based on the image and the detection unit, a separated display image in which the top field image and the bottom field image of the frame including the error are arranged in parallel is displayed on the display unit. And a notification unit that performs notification to the user by displaying.

  When the detection unit detects the field unit error, the notification unit displays a message prompting the user to display the separated display image before displaying the separated display image on the display unit. Also good.

  Further, the detection unit detects both the field unit error and other errors, and the notification unit notifies the user only when the detection unit detects the field unit error. You can go.

  The separated display image may be an image having an image size smaller than that of the frame including the error.

  The separated display image may be a moving image composed of a plurality of images.

  A playback device according to one aspect includes a recording unit that records a moving image, a playback unit that plays back the moving image, an acquisition unit that acquires information about a moving image to be processed from the recording unit, and the acquisition unit With respect to the moving image obtained by the above, when detecting an error in field units by a detection unit that detects an error that occurs at least in field units, a display unit that performs display based on a detection result by the detection unit, And a notification unit configured to notify a user by displaying, on the display unit, a separate display image in which a top field image and a bottom field image of the frame including the error are arranged in parallel.

  An error detection program according to an aspect includes an acquisition process for acquiring information on a moving image to be processed, a detection process for detecting an error that occurs at least in a field unit for the moving image, and the field in the detection process. When a unit error is detected, a separate display image in which the top field image and the bottom field image of the frame including the error are displayed in parallel on a display unit that performs display based on the detection result in the detection process, The computer executes a notification process for performing notification to the user.

  According to the present invention, it is possible to reduce the load of confirmation by a user after automatically detecting an error.

Block diagram showing a configuration example of an error detection device Flow chart showing an operation example of the error detection device at the time of error detection Flow chart showing an example of the operation of the error detection device after error detection Display example of monitor 16 Another display example of the monitor 16 Another display example of the monitor 16 The figure explaining a separated display image Another figure explaining separated display image

  FIG. 1 is a block diagram illustrating a configuration example of an error detection device according to the embodiment. In the error detection device, an error detection program for detecting various errors is installed in advance for a moving image (target moving image) to be processed.

  Note that any target moving image may be used. For example, it may be generated by an imaging device capable of generating a digital image, may be converted from analog moving image image data to digital data, or recorded on a video tape or the like. A moving image may be converted into digital data. Further, it may be a moving image created by a computer or the like. Moreover, the target moving image may be compression-coded.

  In the following, an example in which all data of the target moving image is processed as an error detection target will be described, but only a part of data of the target moving image may be processed as an error detection target. In this case, the error detection target part may be specified based on a user operation, or may be automatically specified based on information on the target moving image.

  The error detection device 11 shown in FIG. 1 includes an error detection unit 12, a CPU 13, an alarm output unit 14, an input / output I / F 15, a monitor 16, and a bus 17. The CPU 13 is connected to the input / output I / F 15. The output of the error detection unit 12 is connected to the CPU 13 via the bus 17. Further, the alarm output unit 14 and the monitor 16 are controlled by the CPU 13.

  The image data of the target moving image input to the error detection device 11 is input to the error detection unit 12.

  Further, an input device (not shown) (keyboard, pointing device, etc.), a network cable for LAN connection, and the like are connected to the error detection device 11 via an input / output I / F 15.

  The error detection device 11 includes a storage device (not shown) (for example, a storage medium such as a hard disk or a nonvolatile semiconductor memory). This storage device stores an image processing program and various data necessary for executing the program.

  The CPU 13 is a processor that comprehensively controls each unit of the error detection device 11. The alarm output unit 14 includes a notification member such as a speaker or a lamp, and notifies the user of the detection result of the error detection unit 12. The monitor 16 includes a display element (not shown), and displays information based on the detection result by the error detection unit 12.

  The error detection unit 12 performs error detection on the image data of the target moving image. Any error may be detected by the error detection unit 12. However, the error detection unit 12 detects an error that occurs at least in field units. Examples of errors that occur on a field-by-field basis are field blackouts in which only one field is very dark, flashing light that only one field is very bright, and irrelevant images inserted in one of the top and bottom fields. There is a subliminal to be done. These errors include errors that occur due to errors during encoding, errors due to transmission errors, errors during editing, etc., as well as errors that were intentionally created for production, flashes such as press conferences, etc. It is. The error detection unit 12 may detect any error using any method including a known technique. Further, the error detection unit 12 outputs information regarding the detected error to the CPU 13 via the bus 17.

  With respect to the error detection apparatus 11 having the above-described configuration, first, an operation example of various error detections in the error detection unit 12 will be described with reference to the flowchart of FIG. 2 is started when each unit executes an error detection program in accordance with a program execution instruction from the user.

(Step S101)
The error detection unit 12 starts acquiring image data of the target moving image specified by the user. The acquired image data is sequentially input to the error detection unit 12 as shown in FIG.

(Step S102)
The error detection unit 12 starts error detection for the target moving image.

(Step S103)
The error detection unit 12 determines whether there is an error based on the error detection result started in step S102. If the error detection unit 12 determines that there is an error, the process proceeds to step S104. If the error detection unit 12 determines that no error exists, the process proceeds to step S105 described below.

(Step S104)
The error detection unit 12 outputs information indicating that an error exists as determination contents to the CPU 13 via the bus 17. As information indicating that an error exists, the content of the error, the frame number of the frame in which the error has occurred, the time at which the error has occurred, the offset position from the beginning of the data, and the like can be considered. In addition, the error detection unit 12 generates a thumbnail image (reduced image) of a nearby location where an error exists, and similarly outputs the thumbnail image to the CPU 13.

(Step S105)
The error detection unit 12 determines whether or not the processing in step S103 and step S104 has been completed for all data. If the error detection unit 12 determines that all data has been completed, the error detection unit 12 ends the series of processing. If the error detection unit 12 determines that all data has not been completed, the error detection unit 12 returns to step S103 and executes the processing after step S103.

  Next, an operation example of the CPU 13 after the error detection in the error detection unit 12 will be described with reference to the flowchart of FIG. The process of the flowchart of FIG. 3 is started continuously after the process of FIG. 2 described above. Note that the processing of the flowchart of FIG. 3 may be started in response to a program execution instruction from the user. The case where it is started in response to a program execution instruction by the user is, for example, a case where the error detection described in FIG. 2 is executed in advance and the result is called after that.

(Step S201)
The CPU 13 determines whether or not there is a field unit error in the target moving image based on the error detection result described with reference to FIG.

  If the CPU 13 determines that an error in field units exists in the target moving image, the CPU 13 proceeds to step S203 described later. On the other hand, when determining that there is no field unit error in the target moving image, the CPU 13 proceeds to step S202.

(Step S202)
The CPU 13 performs normal display settings.

  FIG. 4 is an example of a normal display on the monitor 16. As shown in FIG. 4, the CPU 13 arranges four areas on the monitor 16. In the upper left first window W1, a list of error detections performed in the past is displayed. A list of detected errors is displayed in the second window W2 in the upper right. In the third window W3 at the center, a bar indicating time information related to error detection is displayed. In the lower fourth window W4, a plurality of thumbnail images relating to errors are displayed.

  As shown in FIG. 4, the first window W1 displays a list of error detection names (titles), date and time of error detection, and the number of detected errors. The user can select some kind of error detection via an input device (not shown). FIG. 4 shows an example in which error detection of the lowest title “T3” is selected.

  As shown in FIG. 4, the second window W2 displays a list of error occurrence locations (frame numbers), occurrence times, and error types detected in the error detection selected in the first window W1. The user can select any error via an input device (not shown). FIG. 4 shows an example in which the error of the uppermost error (frame No. N1) is selected.

  In the third window W3, as shown in FIG. 4, a bar indicating time information related to error detection selected in the first window W1 is displayed. In the example of FIG. 4, an icon A1 indicating that an error has been detected is displayed on the bar. The user can select any position on any bar or any one of the icons A1 via an input device (not shown).

  In the fourth window W4, as shown in FIG. 4, a plurality of thumbnail images near the error selected in the second window W2 or the third window W3 are displayed. These thumbnail images are displayed in chronological order, and the user can check the outline of the error by viewing these thumbnail images. Note that the thumbnail image displayed in the fourth window W4 may be the thumbnail image described in step S104 in FIG. 2 described above, or may be a newly created thumbnail image. The thumbnail image is usually a reduced image based on one of a top field image and a bottom field image of the frame.

  The user can select any thumbnail image via an input device (not shown). When any thumbnail image in the fourth window W4 is selected by the user, the CPU 13 displays a full-size image corresponding to the selected thumbnail image on the monitor 16. The user can confirm the details of the error by viewing the full-size image. The CPU 13 performs display settings for performing each display described above, and ends the process.

(Step S203)
On the other hand, if it is determined in step S201 that an error in the field unit exists in the target moving image, the CPU 13 performs display setting for the error in the field unit. This display setting is to notify the user using the monitor 16 when an error in field units is detected in the error detection of FIG. 2 described above.

  As described in step S202, in the normal display setting (when an error in units of fields is not detected), a thumbnail image that is a reduced image based on either the top field image or the bottom field image of the frame. Is displayed. However, when there is an error in field units, such an thumbnail image cannot be visually confirmed. For example, if a thumbnail image based on the top field is displayed even though some error has occurred in the bottom field, no error appears in this thumbnail image.

  Therefore, if it is determined that an error in the field unit exists in the target moving image, the CPU 13 performs display setting for the error in the field unit.

  FIG. 5 is an example of an error display on the monitor 16 for each field. As shown in FIG. 5, the first window W1 is the same as the normal display setting. In the second window W2, in addition to an error list similar to the normal display setting, an icon A2 indicating that a field unit error exists is further displayed. In addition to the bar indicating the time information similar to the normal display setting, the third window W3 further displays an icon A3 indicating that a field unit error exists. Due to the presence of the icons A2 and A3 described above, the user can easily recognize that the error in which these icons are displayed is an error in units of fields. Also, in the fourth window W4, a plurality of thumbnail images near the error selected in the second window W2 or the third window W3 are displayed as in the normal display setting.

  Further, in the display setting for error in units of fields, when the user selects the icon A2 and the icon A3 described above via an input device (not shown), the CPU 13 displays the fourth window W4 in the manner shown in FIG. A plurality of thumbnail images near the selected error are displayed. However, in the display setting for error in field units, the CPU 13 displays a separate display image instead of the thumbnail image described in FIG. As shown in FIG. 7, the separated display image is an image in which the top field image and the bottom field image of the frame including the error are arranged in parallel, and the size thereof is substantially the same as the thumbnail image described above. FIG. 7 illustrates a separate display image having substantially the same aspect ratio as that of a normal thumbnail image. However, as shown in FIG. 8, the aspect ratios of the top field image and the bottom field image are set to normal thumbnail images. It may be the same as the aspect ratio of the image. When such display is performed, the details of the top field image and the bottom field image can be visually confirmed. Further, the separated display image shown in FIG. 7 and the separated display image shown in FIG. 8 may be switched and displayed. Moreover, it is good also as a structure which displays the moving image which consists of a some separated display image on the monitor 16 according to a user's instruction | indication. As described above, the separated display image has substantially the same image size as a normal thumbnail image. Therefore, even when a moving image is displayed, a smooth display can be realized with a reduced processing load.

  Note that the above-described display setting for error in units of fields is an example. In any case, the CPU 13 performs “display of separated display image” or “display for prompting the user to display the separated display image” using the monitor 16 in the display setting for error in units of fields. .

  As the “display of the separated display image”, for example, when there is an error for each field without displaying the icon A2 and the icon A3, the separated display image is automatically displayed in the fourth window W4. It is good also as a structure. In this case, when there is no field unit error, the normal thumbnail image shown in FIG. 4 is displayed in the fourth window W4. When there is a field unit error, the fourth window W4 is automatically displayed. A separate display image is displayed. Further, when there is an error in field units, the normal thumbnail image shown in FIG. 4 and the separated display image shown in FIG. 6 may be displayed side by side. If there is an error in field units, when any thumbnail image in the fourth window W4 is selected by the user, a separate display image corresponding to the full-size image described above may be displayed on the monitor 16. good.

  The “display for prompting the user to display a separate display image” may be configured to display a message for notifying the user that an error in field units exists, for example. Moreover, about the display of an icon, it is good also as a structure which displays only either the icon A2 or the icon A3.

  By performing the display for each field error described above, the user can easily determine the change including the field error by visual observation. Then, the user can grasp the outline of the error from these displays and perform more detailed detection and examination.

  In addition, in combination with the above-described normal display and each display for error in field units, the user may be notified by voice via the alarm output unit 14. The error detection result may be output to the outside of the error detection device 11 via the input / output I / F 15. Further, information regarding the detected error may be recorded in the tag information of the target moving image.

  Moreover, each process demonstrated in the above-mentioned example may be performed by hardware, and may be performed by the software by CPU13.

  Moreover, although the example which performs a series of processes according to the program execution instruction | indication by a user was shown in the example mentioned above, this invention is not limited to this example. For example, a series of processes may be automatically executed each time the error detection device 11 reads image data of some moving image.

  As described above, the error detection apparatus according to the present embodiment includes an acquisition unit that acquires information on a moving image to be processed, a detection unit that detects an error that occurs at least in field units for the acquired moving image, And a display unit that performs display based on the detection result. When an error in field units is detected by the detection unit, the display unit is used to notify the user. Therefore, according to the configuration of the present embodiment, it is possible to reduce the load of confirmation by the user after automatically detecting an error.

  In addition, when the detection unit detects an error in a field unit, the error detection apparatus of the present embodiment displays a separate display image in which the top field image and the bottom field image of the frame including the error are displayed on the display unit. Therefore, the visual confirmation of the field unit change can be facilitated by improving the display method.

<Supplementary items of the embodiment>
(1) Each processing such as the image processing described in the above embodiment, each display method, each window and each icon and shape and arrangement are examples, and the present invention is not limited to this example.

  (2) An error detection program for executing processing by the error detection apparatus described in the above embodiment is also effective as a specific aspect of the present invention. This error detection program may be stored in a storage medium such as a magnetic disk, or may be downloadable via the Internet or the like. In addition, an image processing apparatus and a reproduction apparatus (for example, a photo viewer, a digital photo frame, various printing apparatuses, etc.) including the error detection apparatus described in the above embodiment are also effective as specific aspects of the present invention. The playback apparatus described above may be configured to execute a series of processes when playing back an image.

  From the above detailed description, features and advantages of the embodiments will become apparent. It is intended that the scope of the claims extend to the features and advantages of the embodiments as described above without departing from the spirit and scope of the right. Further, any person having ordinary knowledge in the technical field should be able to easily come up with any improvements and modifications, and there is no intention to limit the scope of the embodiments having the invention to those described above. It is also possible to use appropriate improvements and equivalents within the scope disclosed in.

DESCRIPTION OF SYMBOLS 11 ... Error detection apparatus, 12 ... Error detection part, 13 ... CPU, 16 ... Monitor

Claims (7)

An acquisition unit for acquiring information of a moving image to be processed;
About the moving image, a detection unit that detects an error that occurs at least in field units;
A display unit for performing display based on a detection result by the detection unit;
When the error in the field unit is detected by the detection unit, a separate display image in which the top field image and the bottom field image of the frame including the error are displayed in parallel on the display unit, thereby informing the user. An error detection device comprising: an informing unit for performing. The error detection device according to claim 1,
When the error is detected in the field unit by the detection unit, the notification unit performs a display prompting a user to display the separated display image before displaying the separated display image on the display unit. An error detection device. In the error detection device according to claim 1 or 2,
The detection unit detects both the error in the field unit and other errors,
The error notification device is characterized in that the notification unit notifies the user only when the detection unit detects an error in the field unit. In the error detection device according to any one of claims 1 to 3,
The separated display image is an image having an image size smaller than an image of a frame including the error. The error detection device according to any one of claims 1 to 4,
The error detection apparatus, wherein the separated display image is a moving image including a plurality of images. A recording unit for recording moving images;
A playback unit for playing back the moving image;
An acquisition unit for acquiring information of a moving image to be processed from the recording unit;
About the moving image acquired by the acquisition unit, a detection unit that detects an error that occurs at least in field units;
A display unit for performing display based on a detection result by the detection unit;
When the error in the field unit is detected by the detection unit, a separate display image in which the top field image and the bottom field image of the frame including the error are displayed in parallel on the display unit, thereby informing the user. A playback device comprising: an informing unit for performing. An acquisition process for acquiring information of a moving image to be processed;
A detection process for detecting an error that occurs at least in field units for the moving image;
A display unit that, when detecting an error in the field unit in the detection process, displays a separated display image in which a top field image and a bottom field image of a frame including the error are arranged in parallel based on a detection result in the detection process. An error detection program for causing a computer to execute a notification process for performing notification to a user by displaying on the computer.

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