JP2006115376A - Vehicle mounted display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle mounted display device which can improve visibility of movement of a front vehicle, change of lighting of a traffic signal, etc. by a simple construction. <P>SOLUTION: The device is provided with a camera 1 which photographs the front of the vehicle, and an image processor 3 which converts parts other than a red color in a photographed image, a monochrome. The red part of the photographed image is displayed as a red color in a display screen of a display unit 4, and other parts are displayed in a monochrome. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an in-vehicle display device that displays a captured image of the front of a vehicle on a screen.

Conventionally, by photographing the front of the vehicle, calculating pixel movement in the monitoring line set in the captured image, and detecting the start of the front vehicle, the front vehicle can start and the vehicle can start In some cases, the driver is notified (see, for example, Patent Document 1).
JP 2003-331397 A

  However, in the above-described conventional in-vehicle display device, since a monitoring line is set and the movement of the preceding vehicle is detected from the change in the pixel, the processing becomes complicated, and the vehicle can start at the head of the signal waiting. There was a situation that it was not possible to detect that it became.

  The present invention has been made in view of the above-described conventional circumstances, and an object thereof is to provide an in-vehicle display device capable of improving visibility of movement of a preceding vehicle, change in lighting of a traffic light, and the like with a simple configuration. And

  An in-vehicle display device according to the present invention converts an imaging unit that captures the front of a vehicle, a red detection unit that detects a red area from an image captured by the imaging unit, and converts the area other than the detected red area into monochrome. Image processing means, and display means for displaying an image processed by the image processing means.

  With this configuration, the recognition of the user is improved, and it is possible to quickly cope with the movement of the vehicle ahead and the change of the signal even when at the head of the signal waiting with a simple configuration.

  In the image display device of the present invention, the image processed by the image processing means is displayed on a part of the display means.

  With this configuration, it is possible to quickly respond to the movement of the vehicle ahead and the change of the signal while watching a TV (television) screen, a navigation screen, or the like.

  The image display device of the present invention further includes a state detection unit that detects at least one of the speed of the vehicle, the operation state of the brake pedal, and the operation of the in-vehicle device by the user, and the image processing unit includes: Image processing is started according to the detection result of the state detection means.

  With this configuration, a signal waiting screen can be automatically displayed.

  In the image display device of the present invention, the display unit includes a touch panel, and cuts out and displays a predetermined area including a portion touched by the user.

  With this configuration, the user can easily display a necessary image.

  In the image display apparatus of the present invention, the image processing means recognizes the lamp of the traffic light from the captured image by pattern matching, and cuts out and displays a predetermined area including the lamp when the lamp of the traffic light is recognized. .

  With this configuration, it is possible to automatically display the lighting state of the traffic light in front of the vehicle.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle-mounted display apparatus which can improve visibility, such as a movement of a preceding vehicle, the change of lighting of a traffic light, etc. with a simple structure can be provided.

  FIG. 1 is a block diagram showing a schematic configuration of an in-vehicle display device according to an embodiment of the present invention. As shown in FIG. 1, the in-vehicle display device according to the first embodiment includes a camera 1, a detection unit 2, an image processing unit 3, a display unit 4, a vehicle speed sensor 5, and an input unit 6.

  The camera 1 is an example of a photographing unit and photographs the front of the vehicle. The detection unit 2 is an example of a state detection unit, and receives an output of the vehicle speed sensor 5 and an image (video) taken by the camera 1. The image processing unit 3 is an example of a red detection unit and an image processing unit, and an area other than red in the image input from the camera 1 is converted to monochrome.

  The display unit 4 is an example of a display unit, and a red portion of the photographed video is displayed in red on a display screen such as a touch panel, and the other portion is displayed in monochrome. The vehicle speed sensor 5 is an example of a state detection unit, and detects the speed of the vehicle. The input unit 6 receives an operation signal or the like by a user from a touch panel or the like.

  In the in-vehicle display device configured as described above, an image in front of the vehicle captured by the camera 1 is displayed when the vehicle is waiting for a signal or the like. At that time, the image processing unit 3 performs image processing on the display unit 4. On the display screen, the background is monochrome, and only the red part of the red lamp of the traffic light and the brake lamp of the vehicle ahead is displayed in red. For this reason, the recognition of the user (driver) is improved, it is possible to quickly respond to the movement of the vehicle ahead and the change of the signal even when at the head of the signal waiting, and the smooth flow of traffic is not hindered.

  Here, the image-processed video is displayed on a part of the display screen, for example. By displaying in this way, it is possible to quickly respond to the movement of the vehicle ahead and the change of the signal while watching a TV (television) screen, a navigation screen, or the like.

  Further, image processing by the image processing unit 3 is triggered by any one of the vehicle speed detected by the detection unit 2 by the vehicle speed pulse from the vehicle speed sensor 5, the operation state of the brake pedal, and the operation of the in-vehicle device by the user. You can also start and display the image. That is, when the vehicle stops, when the brake pedal is depressed, or when a display switching operation is performed, the above-described signal waiting screen can be automatically displayed.

  Further, the display screen may be a touch panel, and a predetermined area including a portion touched by the user may be cut out and displayed. In this case, an image required by the user can be easily displayed.

  Alternatively, the signal lamp of the captured image may be recognized by pattern matching, and when the signal lamp is recognized, a predetermined area including the lamp may be cut out and displayed. Thereby, the lighting state of the traffic light ahead of the vehicle can be automatically displayed.

  FIG. 2 is an explanatory diagram showing a display example of the in-vehicle display device according to the embodiment of the present invention. When a signal is waited while the TV screen is displayed, an image in front of the vehicle is displayed on a part of the screen (upper right in the figure) (see FIG. 2A).

  FIG. 2B is an enlarged view of an image in front of the vehicle in FIG. At this time, the red lamp portion of the traffic light is displayed in red, and the other portions are displayed in monochrome. If the signal changes from red to blue, the red display disappears (see FIG. 2C), so the driver can easily notice. be able to. Therefore, the driver can notice that it is possible to start easily even at the head of the signal waiting. Further, in FIG. 2B, the user can further improve the visibility by touching the part where the traffic light or the like is displayed, and displaying a predetermined area including the touched part in an enlarged manner. Can do.

  FIG. 2 (d) shows the traffic light part taken out and shows a state in which the red lamp is lit. The red (red) portion of the lamp can be detected by the pixel signal value on the video memory, and the image processing unit 3 can convert the portion other than red to monochrome.

  FIG. 3 is a flowchart showing an image processing operation according to the embodiment of the present invention, in which R (red), G (green), and B (blue) value processing is performed on each pixel of a captured video. Here, the range of values is 0.0 ≦ R, G, B ≦ 1.0.

  If the value of R in a certain pixel is, for example, R> 0.58 (YES in step S1), and R> G and R> B (YES in step S2), the pixel is regarded as a red pixel and G, A process of substituting min {G, B} into B is performed (step S3).

  On the other hand, if the R value of the pixel is not R> 0.58 (NO in step S1), or if R> G and R> B is not satisfied (NO in step S2), the pixel is regarded as a pixel other than red. Then, the process of substituting min {R, G, B} into R, G, B is performed (step S4).

  If all the pixels have been processed (YES in step S5), the image processing is terminated. If not (NO in step S5), the process returns to step S1 and proceeds to the next pixel process.

  In this way, red and other portions can be distinguished from the captured video, the red portion can be displayed in red, and the other portions can be displayed in monochrome.

  In the above description, the pattern matching of the lamp of the traffic light can be recognized by comparing its shape and size with reference to the pattern table.

  The vehicle-mounted display device according to the present invention has an effect of improving visibility such as movement of a preceding vehicle and change in lighting of a traffic light with a simple configuration, and is useful for a car navigation system and the like.

The block diagram which shows schematic structure of the vehicle-mounted display apparatus which concerns on embodiment of this invention. Explanatory drawing which shows the example of a display of the vehicle-mounted display apparatus which concerns on embodiment of this invention. 7 is a flowchart showing an image processing operation according to the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Camera 2 Detection part 3 Image processing part 4 Display part 5 Vehicle speed sensor 6 Input part

Claims (5)

Photographing means for photographing the front of the vehicle;
A red detection means for detecting a red region from an image photographed by the photographing means;
Image processing means for converting the detected area other than the red area into monochrome;
Display means for displaying the image processed by the image processing means;
A vehicle-mounted display device comprising: The in-vehicle display device according to claim 1,
An on-vehicle display device in which an image processed by the image processing means is displayed on a part of the display means. The in-vehicle display device according to claim 1 or 2,
A state detecting means for detecting at least one of the speed of the vehicle, the operation state of the brake pedal, and the operation of the in-vehicle device by the user;
The image processing means is an in-vehicle display device that starts image processing according to a detection result of the state detection means. An in-vehicle display device according to any one of claims 1 to 3,
The in-vehicle display device that has a touch panel and cuts and displays a predetermined area including a portion touched by a user. The in-vehicle display device according to any one of claims 1 to 4,
The image processing means recognizes a lamp of a traffic light from a captured image by pattern matching, and cuts out and displays a predetermined area including the lamp when the lamp of the traffic light is recognized.

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