JP2009016896A - Motion picture reproducing device and luminance control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a burden on a viewer due to a sudden change in a video image during viewing by solving the problem that the viewer feels pain because he/she cannot follow a sudden big change during viewing if the big change occurs before and after the video image divided into chapters. <P>SOLUTION: A motion picture reproducing device is provided with: a motion picture reproducing means for reproducing inputted motion picture data as a motion picture; an output means for outputting the motion picture reproduced by the motion picture reproducing means; an instruction detecting means for detecting an instruction for skipping the motion picture to be reproduced by the motion picture reproducing means on the basis of a signal from the motion picture reproducing means; and a luminance control means for controlling the output means to temporarily reduce the luminance of an image to be outputted to the output means before execution of the instruction detected by the detecting means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus that reproduces moving image information as a moving image, and more particularly to control of luminance of an image to be reproduced.

  In moving image videos distributed in broadcast programs and packages, when moving to the next situation, a discontinuous moving image with the current scene may be displayed suddenly. At such a boundary, a viewer watching the screen may suddenly see a screen different from the screen that he / she was looking at and feel painful. Furthermore, there is a unit called a chapter in which image data provided in a stream is divided at a specific time position. Chapters are often cut at the timing (scene change) when such a situation changes.

There has been proposed a portable terminal device that fades in and fades out the backlight luminance from a lighting state to a non-lighting state at the switching of a screen such as a still image or a moving image (see Patent Document 1).
JP 2006-84577 A

  If there is a big change before and after the video divided into chapters, the viewer will be unable to follow the sudden change during viewing and will be in pain. In addition to the temporal display switching, there may be a sudden change in a part of one image, and it may be similarly painful.

  The present invention has been made in view of the above problems, and an object thereof is to reduce a burden imposed on a viewer due to a sudden video change during viewing.

With the moving image playback apparatus according to the present invention,
Based on a signal from the moving image reproducing means, a moving image reproducing means for reproducing the input moving image data as a moving image, an output means for outputting the moving image reproduced by the moving image reproducing means, and the moving image reproducing means. An instruction detecting means for detecting that an instruction to skip a moving image reproduced by the means and an instruction output detected by the detecting means are temporarily reduced in brightness of the image output to the output means; There is provided a moving image reproducing apparatus comprising a luminance control means for performing control.

Also,
A moving image reproducing unit that reproduces the input moving image data as a moving image, an output unit that outputs the moving image reproduced by the moving image reproducing unit, and a predetermined range of the moving image reproduced by the moving image reproducing unit. A moving image reproducing apparatus comprising: detecting means for detecting; and brightness control means for controlling to reduce the brightness of an image output to the output means except for a range detected by the detecting means. Is provided.

The brightness control method according to the present invention includes:
When the input moving image data is reproduced as a moving image and it is detected that there is an instruction to skip the reproduction position of the moving image, the instruction is superimposed on the moving image to be reproduced, and then the instruction is The luminance of a moving image to be reproduced is temporarily reduced before execution, and after the execution of the instruction, reproduction is continued with the luminance before reduction.

Also,
The input moving image data is reproduced as a moving image, and it is detected whether or not there is a range including predetermined information in the screen of the moving image. When the range is detected, the detected range is excluded. The reproduction is performed so as to reduce the luminance of the moving image to be reproduced.

  It is possible to reduce a burden during viewing in a scene where the video changes greatly in terms of time and plane.

(This embodiment)
FIG. 1 is a diagram illustrating an example of a configuration diagram of a moving image reproduction apparatus 100 according to the present embodiment. FIG. 1 shows a video recording unit 101, a moving image generation unit 102, a display unit 103, a boundary detection unit 104, and a luminance control unit 105.

  The moving image reproduction apparatus 100 refers to a device having a function of reproducing moving image information obtained by encoding video information broadcast as a television program into digital information, such as a video recorder.

  The video recording unit 101 is a device that stores moving image information. For example, a magnetic disk device that can easily read and write and can easily increase the capacity can be considered. Alternatively, a combination of a distributable medium such as a DVD (Digital Versatile Disk) and its drive device may be used. In the present embodiment, an apparatus built in the moving image playback apparatus 100 is assumed, but it is not always necessary to have the built-in apparatus, and another apparatus capable of communicating via a network may be used.

  The moving image playback unit 102 has a function of playing back a moving image before encoding by decoding the moving image information stored in the video recording unit 101 into video information. When reproducing moving image information, if the image information is divided into several segments by chapters, the segments can be recognized and selectively reproduced. Alternatively, when the moving image is discontinuous, such as fast-forwarding, skipping, or channel switching, or when the operation menu of the moving image reproducing apparatus 100 is displayed, reproduction that discontinues the connection with the original moving image video is also possible. Is possible.

  The display unit 103 includes a display device configured by, for example, an LCD (Liquid Crystal Display), and has a function of displaying the moving image decoded by the moving image reproducing unit 102 on the screen.

  The detection unit 104 detects a point in time when the moving image information decoded by the moving image generation unit 102 is discontinuous. For example, when a chapter included in moving image information is detected or an operation involving screen switching (time-axis boundary detection) is performed, or a partial area in an image at a certain point in time of moving image information is detected according to a predetermined rule (in-screen (Border detection).

  The luminance control unit 105 has a function of controlling the display unit 103 to change and display luminance information included in the original moving image information.

  FIG. 2 is a diagram illustrating an example of luminance control timing in the present embodiment.

In this figure, for example, input switching of the moving image playback apparatus 100, skipping (jumping) to a specified time or chapter, switching of a display screen, and starting operation of a built-in application such as a Web browser are shown. .

  In the initial state, the display unit 103 displays a moving image with normal luminance (1.0).

  If there is an operation instruction such as chapter skip at time 200, information related to the operation is displayed at time 201 in response to the instruction. For example, if a chapter skip instruction is given, a jump to the next chapter is displayed, and if a channel is switched, the viewer is notified in advance which channel to switch to.

  When the detection unit 104 detects that the screen is switched by the operation, the luminance control unit 105 is instructed to do so, and the display unit 103 is instructed to gradually decrease the luminance over time 202. This is because if the screen is darkened for a short time, the viewer may feel the screen change suddenly.

  When the minimum luminance (0.0) is reached, an operation with discontinuity of screen display, which is instructed at time 200, is performed. Since the brightness is suppressed, the viewer hardly feels the screen change.

  Next, the luminance control unit 105 instructs to gradually change the luminance of the image displayed on the display unit 103 from the minimum luminance to the normal luminance over the time 203. The screen change has already been completed at time 204 when the luminance has increased to normal luminance.

  With this configuration, it is possible to reduce a burden during viewing in a scene where the video changes greatly with time.

  Furthermore, since it is considered that the image and the sound are united for the viewer, the sound level may be controlled in proportion to the brightness control. In this case, the burden at the time of screen change can be reduced more naturally.

(First modification)
The luminance control of the display unit 103 performed by the luminance control unit 105 can be performed as follows.

  FIG. 3 is a diagram illustrating another example of the luminance control timing in the present embodiment. It is assumed that there is moving image content divided into a plurality of segments according to chapters, and each is represented as segments 300a, 300b, 300c, 300d, and 300e.

  At this time, there is a case where the contents of each segment are distinguished from important ones and less important ones. Specifically, this is a case where the segments 300a, 300c, and 300e are CMs inserted between the main programs. A device such as a video recorder records for the purpose of the main part, and it is considered that CM is not so important for viewers.

  The luminance A and luminance B shown in the figure will be described. The brightness control timing indicated by brightness A is control in which the detection unit 104 detects the position where the chapter is set, switches the segment once to the minimum brightness, and then returns to the normal brightness. When this embodiment is applied to the case of FIG. 2, it is the same as using chapter detection here instead of an operation instruction. Since the location where the chapter is hit often indicates a scene change, the screen is inevitably largely changed.

  The luminance B is controlled so that the luminance is kept low while a less important segment such as a CM is being reproduced, and the normal luminance is maintained when the other segments are reproduced. In the figure, the luminance level is kept low during playback of the segments 300a, 300c, and 300e, which are CM portions.

  The luminance control unit 105 determines luminance control for the display unit 103 in consideration of both luminance A and luminance B.

  With this configuration, it is possible to reduce the burden during viewing in a scene where the video changes greatly with time, and to naturally select and view a moving image portion that does not need to be actively viewed by the viewer. It becomes possible.

(Second modification)
The luminance control of the display unit 103 performed by the luminance control unit 105 can be performed as follows.

  FIG. 4 is a diagram showing another embodiment of the moving image playback apparatus 100 according to the modification of the present embodiment. This figure displays a sports relay video, and the state of an area 400 instructed by the brightness control unit 105 to display at normal brightness, and an area instructed to display with reduced brightness except for this area 400 are shown. Show.

  In the present embodiment, the detection unit 104 determines which part of the screen has normal luminance and sets the boundary of the range (boundary detection in the screen). Based on the set boundary, the detection unit 104 instructs the luminance control unit 105 to change the luminance inside and outside the boundary.

  As a rule for setting a boundary, for example, a method of performing face recognition processing on a moving image image and displaying a range in which the face is displayed with normal luminance can be considered. In the case of ski relay, a process of detecting a skier moving at high speed by image processing and reducing the brightness of the skier part at normal brightness and the other snowy field part can be considered. In this case, it is possible to provide a viewer with a screen that is easy to see as a whole screen by reducing the reflection of snow.

  If comprised in this way, even if an image | video changes greatly planarly, it will become possible to select | select and view the moving image part to gaze at naturally.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

It is a figure which shows an example of the block diagram of the moving image reproducing device concerning this embodiment. It is a figure which shows an example of the luminance control timing in this embodiment. It is a figure which shows another example of the luminance control timing in this embodiment. It is a figure which shows another embodiment of the moving image reproduction apparatus concerning the modification of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Moving image reproducing device, 101 ... Video recording part, 102 ... Moving image generation part, 103 ... Display part, 104 ... Detection part, 105 ... Luminance control part, 300. ··segment

Claims (8)

Moving image reproduction means for reproducing the input moving image data as a moving image;
Output means for outputting a moving picture reproduced by the moving picture reproducing means;
Instruction detecting means for detecting that an instruction to skip the moving picture reproduced by the moving picture reproducing means is made based on a signal from the moving picture reproducing means;
A moving image reproducing apparatus comprising: luminance control means for controlling to temporarily reduce the luminance of an image output to the output means before executing the instruction detected by the detecting means.   2. The moving image reproducing apparatus according to claim 1, wherein when the instruction is given, the moving image reproducing means reproduces the content of the instruction in a superimposed manner with the moving image. Based on a signal from the moving image reproducing means, further comprising a segment detecting means for detecting that the segment of the moving image reproduced by the moving image reproducing means is switched;
In addition to the control based on the detection result of the instruction detection unit, the luminance control unit controls the output unit so that the segment has a predetermined luminance during reproduction based on the detection result of the segment detection unit. The moving image reproducing apparatus according to claim 1, wherein the luminance of an image to be output is controlled. Moving image reproduction means for reproducing the input moving image data as a moving image;
Output means for outputting a moving picture reproduced by the moving picture reproducing means;
Detecting means for detecting a predetermined range of the moving image reproduced by the moving image reproducing means;
A moving image reproducing apparatus comprising: luminance control means for controlling to reduce the luminance of an image output to the output means except for a range detected by the detection means.   5. The moving image reproduction apparatus according to claim 1, wherein the output unit controls a sound level of a moving image to be output in accordance with the control of the luminance control unit. Play the input video data as a video,
When it is detected that there is an instruction to skip the playback position of the moving image,
After the instruction is reproduced and superimposed on the moving image to be reproduced, the luminance of the moving image to be reproduced is temporarily reduced before the instruction is executed,
A luminance control method during reproduction of a moving image, wherein after the execution of the instruction, reproduction is continued with the luminance before the decrease. Play the input video data as a video,
When it is detected that the segment of the moving image is switched during the playback process,
A luminance control method at the time of moving image reproduction, characterized by temporarily reducing the luminance of a moving image to be reproduced before and after segment switching, and continuing reproduction at a predetermined luminance for the segment during reproduction of the segment . Play the input video data as a video,
Detecting whether or not there is a range including predetermined information in the screen of the moving image;
If the range is detected,
A luminance control method during reproduction of a moving image, wherein the reproduction is performed so as to reduce the luminance of the moving image to be reproduced, excluding the detected range.

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