JP5408198B2 - Video display device and video display method - Google Patents

Description

  The present invention relates to an image display apparatus and an image display method for displaying an image that allows a driver to grasp a situation around the vehicle, for example, when the vehicle is parked.

  Conventionally, a technique for processing a plurality of camera images installed around a vehicle and providing the images to a driver is known from Patent Document 1 below. The vehicle peripheral image processing apparatus described in Patent Document 1 converts one or a plurality of camera images into an image captured from a virtual viewpoint position by performing coordinate conversion with respect to a certain reference plane, and adds CG to the image. A video (hereinafter referred to as a bird's-eye view video) is provided in which the host vehicle CG image created in advance by technology is superimposed to capture the host vehicle from the sky. In creating such a bird's-eye view video, the ground is often used as the reference plane. This bird's-eye view video is an effective representation in scenes where parking is done in line with the parking frame or where the curb is approached because the positional relationship between the white line and curb on the ground and the vehicle is objectively expressed. It is.

  By creating such a bird's-eye view video, the vehicle peripheral image processing device described in Patent Document 1 displays an original image that is not a bird's-eye view video and a bird's-eye view video, as described in paragraph number 0050 and thereafter. And let the driver know around the vehicle.

JP 2004-254219 A (see FIG. 7)

  However, when a bird's-eye view image is synthesized using the technique described in Patent Document 1 described above, an object existing on the reference plane can be converted into an image while theoretically completely maintaining the positional relationship. There is a problem that a difference in the positional relationship between the vehicle CG image and the obstacle around the vehicle may appear for a three-dimensional object at a position higher or lower than the reference plane.

  For example, in a vehicle having a high bumper position, such as an SUV type vehicle, the bumper may be represented on an overhead view image at a position far from the position where the bumper actually exists. Thus, if the difference between the actual own vehicle position and the other vehicle position appears on the bird's-eye view video, there is a possibility that the predicted trajectory of the own vehicle that can be confirmed on the bird's-eye view video does not match the actual travel locus.

  Therefore, the present invention has been proposed in view of the above situation, and even when an overhead video is displayed, the relative position of the obstacle in the overhead video and the relative of the actual obstacle are displayed. An object of the present invention is to provide a video display device and a video display method capable of confirming a difference from a position on the same screen.

In the present invention, a plurality of cameras are used to image different directions around the vehicle, and the position of each pixel of a plurality of current direct images captured by the plurality of cameras using image processing means is determined as a direct image and an overhead image. Based on a conversion table that defines the pixel arrangement relationship with the above, an overhead video is created and displayed by performing coordinate conversion to the position of each pixel of the overhead video . When an obstacle close to the host vehicle is detected, an obstacle alarm display that covers an area from the host vehicle to the obstacle in the overhead view image is performed . Thereby, the above-mentioned problem is solved.

Since the sense of distance between the host vehicle and the obstacle is distorted by the overhead view conversion, there is a possibility of erroneous confirmation of the positional relationship between the two . It is possible to correct the misrecognition of the positional relationship by displaying the obstacle alarm display that covers the area up to.

It is a block diagram which shows the structure of the driving assistance device to which this invention is applied. It is a top view which shows the structure of the imaging part which comprises the driving assistance device to which this invention is applied. It is a figure for arriving and explaining the image pick-up field of the camera which constitutes the image pick-up part which constitutes the driving support device to which the present invention is applied, (a) is the back image pick-up area, (b) is the left image pick-up area, (C) is a front imaging region, and (d) is a right imaging region. It is a figure which shows the example of a display which displayed the bird's-eye view image and the direct image side by side on the display part of the driving assistance device to which the present invention is applied. It is a figure which shows the example of a display which displayed the bird's-eye view image including an obstacle display, and the direct image | video on the display part of the driving assistance device to which this invention is applied side by side. It is a figure which shows the example of a display which displayed the bird's-eye view image including an obstacle warning display, and the direct image | video on the display part of the driving assistance device to which this invention was applied side by side. It is a figure which shows the example of a display which displayed the bird's-eye view image including a guideline display, and the direct image | video on the display part of the driving assistance device to which this invention is applied. It is a figure which shows the example of a display which displayed the bird's-eye view image and the direct image | video containing the guideline display which changed the display state side by side on the display part of the driving assistance device to which this invention is applied. It is a figure which shows the example of a display which displayed the bird's-eye view image | video which changed the background color, and the direct image | video on the display part of the driving assistance device to which this invention is applied. It is a figure for demonstrating the effect of the driving assistance device to which this invention is applied, (a) is the positional relationship of an actual own vehicle and other vehicles, (b) is the own vehicle grasped | ascertained with a bird's-eye view image, The positional relationship with other vehicles.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The present invention is applied to, for example, a driving assistance apparatus configured as shown in FIG. This driving support device performs image processing on the driver's view of the surroundings of the vehicle from above and the camera video mounted on each part of the vehicle body as information for use in confirming the positional relationship. It has the function of a video display device that displays simultaneously on the same screen as a video that is not displayed (hereinafter referred to as a direct video), and supports the driving operation by presenting the video that the driver needs.

[Configuration of driving support device]
As shown in FIG. 1, the driving support device includes an imaging unit 1 composed of a plurality of cameras mounted on the vehicle body of the host vehicle, and a position where the display screen is provided in the passenger compartment of the host vehicle and visible from the driver. And the display unit 2 installed in the. In addition, the driving support device includes a video processing unit 4, an obstacle detection unit 5, a vehicle signal, and a control unit 3 that comprehensively controls video display using a plurality of camera images captured by the imaging unit 1. The acquisition unit 6 and the operation unit 7 are connected.

  As shown in FIG. 2, the imaging unit 1 includes a front camera 1 </ b> F provided at the front part of the host vehicle 10, a rear camera 1 </ b> B provided at the rear part of the host vehicle 10, and a right door mirror on the right side of the host vehicle 10. And a left side camera 1L provided on a left door mirror on the left side of the host vehicle 10. These front camera 1F, rear camera 1B, right side camera 1R, and left side camera 1L are so-called wide-angle cameras, and are optically designed with an angle of view of 180 degrees. Such an imaging unit 1 captures a direct image, which is a camera image including the situation of the rear imaging area 11B of the host vehicle 10 by the rear camera 1B (FIG. 3A), and the left camera 1L of the host vehicle 10. A left side direct image including the situation of the left side imaging region 11L is taken (FIG. 3B), and a front direct image including the situation of the front imaging region 11F of the host vehicle 10 is taken by the front camera 1F (FIG. 3 ( c)), a right side direct image including the situation of the right side imaging region 11R of the host vehicle 10 is captured by the right side camera 1R (FIG. 3D).

  Driving by acquiring the front direct image, the rear direct image, the right direct image, and the left direct image captured at the same timing by the front camera 1F, the rear camera 1B, the right side camera 1R, and the left side camera 1L. The support device can acquire all the images around the vehicle.

  The display unit 2 receives a display image captured by the imaging unit 1 and processed by the image processing unit 1 as an input, and the entire vehicle surroundings according to the driver's operation, the obstacle detection status in the obstacle detection unit 5, and the like. And a direct image including a part of the situation around the vehicle are displayed at the same time.

  The obstacle detection unit 5 detects the presence or absence of obstacles around the vehicle and the relative position (direction and distance with respect to the own vehicle 10) with respect to the own vehicle 10. The obstacle detection unit 5 detects, for example, an obstacle using an ultrasonic sensor or an infrared sensor, or detects an obstacle by inputting a direct image acquired by the imaging unit 1 and performing image analysis or the like. Is mentioned. The obstacle detection unit 5 outputs obstacle detection information including the presence / absence of an obstacle to the host vehicle 10 and a relative position to the control unit 3.

  The vehicle signal acquisition unit 6 acquires a vehicle speed signal such as a vehicle speed and a vehicle traveling direction as information representing the state of the host vehicle 10 and outputs the vehicle speed signal to the control unit 3. The operation unit 7 includes a shift lever, for example, and outputs shift position information indicating the operation state of the shift lever to the control unit 3.

  The video processing unit 4 acquires a plurality of direct videos captured by the imaging unit 1 and performs predetermined video processing to create a bird's-eye view image that allows a list of surroundings of the vehicle to be grasped. The video processing unit 4 stores in advance a conversion table that records a pixel arrangement correspondence between a plurality of input direct videos and an output overhead video. When a plurality of direct videos are input from the imaging unit 1, the video processing unit 4 stores each direct video in a predetermined input memory. Each stored direct video is read by the video processing unit 4 in units of pixels according to the conversion table and stored in the output memory. As a result, it is possible to develop a bird's-eye view video in which necessary image areas are cut out from the front direct video, the rear direct video, the right direct video, and the left direct video in the output memory. When the video processing unit 4 completes the creation of the overhead view video according to the conversion table, the video processing unit 4 outputs the overhead view video to the control unit 3.

  The bird's-eye view image 100 created by the image processing unit 4 is a collection of four types of virtual viewpoint positions of the direct images at one point above the vehicle, as shown on the left side of FIG. Displayed at the same time. Such a bird's-eye view image 100 allows the driver to grasp the surroundings of the vehicle in a form as if the host vehicle 10 is looked down from above.

  According to FIG. 4, the bird's-eye view image 100 is arranged such that the own vehicle CG image 101 is placed at the center of the image, and the left side bird's-eye view image 102 </ b> L, the right side bird's-eye view image 102 </ b> R, The video 102F and the rear overhead video 102B are arranged and configured. Further, in the bird's-eye view image 100, a mask line 104 is disposed between the front bird's-eye view image 102F, the left-side bird's-eye-view image 102L, and the right-side bird's-eye-view image 102R, and the rear-view bird's-eye image 102B, the left-side bird's-eye view image 102L, and the right-side bird's-eye view image. The mask line 104 is arranged between the terminal 102R and the terminal 102R.

  Thus, by providing the mask lines 104 at the joints between the images, the various overhead view images 102 are divided into a plurality of regions so that the driver can grasp the joints. Note that the overhead video segmentation method may be other than the pattern shown in FIG.

  Further, according to FIG. 4, the direct video 110 that is the situation of the rear imaging area 11 </ b> B is simultaneously displayed in parallel with the overhead view video 100. The direct image 110 is in any one of the front imaging area 11F, the left imaging area 11L, the right imaging area 11R, and the rear imaging area 11B according to the shift position information and the vehicle speed signal acquired by the vehicle signal acquisition unit 6. It becomes a video showing.

  When the approach of the host vehicle 10 and the obstacle is predicted from the obstacle detection information from the obstacle detection unit 5, the control unit 3 draws a line of sight on the information used for confirming the positional relationship (attention) Control to notify the driver by video or sound. In addition, the control unit 3 acquires the current vehicle state from the vehicle speed signal from the vehicle signal acquisition unit 6 and the shift position information from the operation unit 7, and informs the driver by video and sound according to the state. Various information may be left unattended.

  Specifically, when it is detected from the obstacle detection information that there is an obstacle around the vehicle, the control unit 3 simultaneously displays a direct video 110 including the obstacle together with the overhead view video 100. Moreover, the control part 3 displays the direct image | video which makes the direction from which the obstruction was detected into an imaging area from a vehicle speed signal or shift position information.

[Video display example]
Next, as described above, a display example by the driving support apparatus capable of simultaneously displaying the overhead view image 100 and the direct image 110 will be described.

"First display example"
For example, when there is an obstacle such as a pylon on the left rear side of the host vehicle 10, the control unit 3 includes an overhead view image 100 created by the video processing unit 4 as shown in the first display example of FIG. An image obtained by combining the rear direct image 110 captured by the rear camera 1 </ b> B is displayed on the display unit 2. Here, regardless of whether or not the obstacle detection information is generated by the obstacle detection unit 5, the control unit 3 gives an overview from the vehicle speed acquired by the vehicle signal acquisition unit 6 and the shift position information from the operation unit 7. The image 100 and the rear direct image are displayed.

  In such a situation, the overhead view image 100 and the direct image 110 have the left side view image 102L, the right side view image 102R, and the rear view image 102B, the parking frame display 103, and the left rear side of the host vehicle CG image 101. The obstacle display 121 is displayed at a display position that matches the relative position of the host vehicle 10 transmitted by the obstacle detection information.

  As described above, when the overhead image 100 and the direct image 110 including the rear of the vehicle are displayed, the obstacles reflected in the overhead image 100 and the obstacles reflected in the direct image 110 are different from each other. This is because the bird's-eye view image 100 performs processing for converting the image captured by the imaging unit 1 into the bird's-eye view image 100, and the correct relative positional relationship is reproduced on the reference plane in the bird's-eye view image 100. Obstacles that are higher or lower than the reference plane do not reproduce the actual relative position.

  Therefore, although not shown, the pylon in the overhead view image 100 of FIG. 5 is reproduced as a distorted shape because it is a three-dimensional object. Specifically, the tip portion of the pylon appears on the bird's-eye view image 100 so as to appear farther than the relative position with the actual host vehicle 10. Since the closer to the camera of the imaging unit 1 attached to the vehicle, the farther it looks, the more the bumper appears on the bird's-eye view video 100 farther than it actually is in the SUV type vehicle with a high bumper position. Thus, the difference between the actual own vehicle position and the other vehicle position appears.

  Therefore, as shown in FIG. 5, the driving support apparatus displays a rear view that reflects the rear of the vehicle as a direct image 110. As a result, the driving support device can display the obstacle display 121 in a form close to reality by using the fact that the direct image 110 can be naturally expressed with less distortion of the three-dimensional object compared to the overhead image 100.

  In addition, when the relative position between the host vehicle 10 and the pylon is acquired as the obstacle detection information from the obstacle detection unit 5, the control unit 3 recognizes the relative position between the pylon and the host vehicle 10 to check the obstacle. Can be recognized. In this case, as shown in FIG. 6, the control unit 3 displays an obstacle alarm display 131 that covers the vicinity of the portion of the host vehicle 10 in the direction in which the obstacle is detected on the overhead view image 100. The obstacle alarm display 131 is rectangular in FIG. 6 and is displayed using an emphasis color. However, the sense of distance between the vehicle 10 and the obstacle (pylon) is distorted by overhead conversion. This is because the positional relationship may be erroneously confirmed.

  The obstacle alarm display 131 may have various display forms such as a round shape or an L shape. The size of the obstacle alarm display 131 may be changed according to the distance from the host vehicle 10 to the obstacle, or may be blinked according to the distance from the host vehicle 10.

  As shown in FIG. 6, the direct video 110 parallel to the overhead video 100 displays an obstacle alarm display 132 so as to cover the obstacle display 121. The obstacle warning display 132 is displayed in the form of a round line so as to emphasize the obstacle display 121. The obstacle warning display 132 may surround the obstacle display 121 with a square or a triangle, or may directly display the obstacle display 121 portion of the video 110 with an icon or the like. The obstacle alarm display 132 may be blinked or the highlight color may be changed so that the line of sight is directed directly toward the image 110 rather than 100. Thus, the driver can directly determine the contact between the host vehicle 10 and the obstacle with reference to the video 110 rather than the bird's-eye view image 100, and can suppress erroneous determination due to the distortion of the three-dimensional object in the bird's-eye view image 100. .

  In this example, the overhead image 100 and the direct image 110 are displayed side by side. However, when the overhead image 100 and the direct image 110 are displayed separately and the image to be displayed is the overhead image 100, the overhead image 100 is displayed. The obstacle alarm display 131 may be displayed together with the video 100, and when the video to be displayed is the direct video 110, the obstacle alarm display 132 may be displayed together with the overhead video 100.

  Furthermore, the obstacle alarm display 131 and the obstacle alarm display 132 are not limited to the shapes described above, and the type of the obstacle is recognized by the video processing unit 4 from the direct image captured by the imaging unit 1, and the obstacle is displayed. It is good also as a virtual display corresponding to the kind of. For example, from the result of image recognition, icons simulating the shapes of humans, animals, other vehicles, etc. prepared in advance are displayed as the obstacle alarm display 131 and the obstacle alarm display 132, or the outline shape of the obstacle is determined by image recognition. It may be detected and combined and displayed in combination with basic figures (rectangles, triangles, circles, etc.) that have been facilitated in advance.

  Further, in the bird's-eye view video 100, the shape of the obstacle alarm may be a quadrangle, and the image 110 may be displayed directly on the portion covered and hidden inside.

  Further, as the obstacle alarm display 131 and the obstacle alarm display 132, the image processing unit 4 recognizes the shape and color of the obstacle from the direct image captured by the imaging unit 1, and changes the shape and color of the obstacle. A corresponding virtual display may be used. For example, when a person is detected from the result of image recognition, the shape of the person is a rectangle, and a virtual pattern that simulates the color of clothes is displayed as an obstacle alarm display 131 and an obstacle alarm display 132. If the object is a small object such as a block, the shape of the small object may be a square, and a virtual pattern simulating the surface color may be displayed as the obstacle alarm display 131 and the obstacle alarm display 132.

  Further, the obstacle warning display 131 and the obstacle warning display 132 do not completely hide the part of the host vehicle 10 where a misrecognition of the positional relationship between the host vehicle 10 and the obstacle is expected, but is surrounded only by a frame. You may make it cover with translucent emphasis colors, such as yellow and red. Thereby, the driver can grasp the image using the image in the bird's-eye view image 100 without partially or completely hiding it.

"Second display example"
Next, a second display example of the overhead image 100 and the direct image 110 will be described.

  In the second display example, before the obstacle is detected around the host vehicle 10 from the obstacle detection information, the display size of the video 110 ′ is made smaller than the display size of the overhead image 100 as shown in FIG. . Thereby, in the period when the obstacle is not detected, the overhead image 100 is more visually noticed than the direct image 110.

  In the second display example, a guideline display 141 for allowing the user to grasp the positional relationship between the vehicle 10 and the surroundings of the vehicle is displayed on the bird's-eye view image 100 and the direct image 110 ′. The guideline display 141 may be a line indicating the vehicle width extending in the traveling direction from the host vehicle CG image 101, or an expected course trajectory line that changes according to the steering angle detected by the vehicle signal acquisition unit 6. May be. In the second display example, only one of the guideline display 141 of the overhead image 100 and the guideline display 141 of the direct image 110 ′ may be displayed, or both may be displayed simultaneously.

  When the overhead view image 100 and the direct image 110 ′ are displayed, the control unit 3 detects an obstacle based on the obstacle detection information, as shown in FIG. 8, from the display state shown in FIG. The display size of the overhead image 100 ′ is reduced, and the display size of the direct image 110 is increased. Thereby, the display size of the bird's-eye view image 100 ′ is changed to be smaller than the display size of the direct image 110, and at the time of obstacle detection, the image is viewed with attention directed to the image 110 directly rather than the bird's-eye view image 100 ′.

  When this obstacle is detected, the guideline display 141A on the obstacle detection side blinks without blinking the guideline display 141B far from the obstacle, as indicated by the dotted line in the direct image 110 in FIG. Thereby, the driver is made to know the position where the obstacle appears in the direct image 110. Further, the guideline display 141A on the obstacle detection side may be highlighted and the thickness may be increased as compared with the guideline display 141B on the obstacle non-detection side as well as the case where the guideline display 141A blinks. Furthermore, the driver's line of sight may be directed by expressing the guideline display 141A with an animation having a movement that flows. Furthermore, even when the guideline display 141 is displayed as an expected course trajectory corresponding to the steering angle detected by the vehicle signal acquisition unit 6, attention is similarly directed to the guideline display 141 A on the obstacle detection side. A display form may be used.

  Further, the control unit 3 can avoid an error in determining the positional relationship with respect to the three-dimensional object by erasing the guideline display 141 </ b> A displayed in the overhead view image 100 when no obstacle is detected at the same time as the obstacle detection. it can.

  In the description of the second display example using FIG. 7 and FIG. 8 described above, when the obstacle is detected, the display size of the overhead image 100 is reduced, and the display size of the video 110 is directly increased. Although it is shown that the obstacle side of the guideline display 141A in the direct image 110 is blinked at the same time, if the driver's attention can be directed, the display size is changed and the guideline display 141A is changed. The guideline display 141A of the bird's-eye view video 100 may be blinked without being erased.

"Third display example"
Next, a third display example of the overhead image 100 and the direct image 110 will be described.

  In this third display example, before the obstacle is detected in the vicinity of the host vehicle 10 from the obstacle detection information, the display size of the video 110 is directly made smaller than the display size of the overhead view video 100 in the same manner as in FIG. At the time of detection, as shown in FIG. 9, the driver's attention is directed by changing the color of the background color variable region 151 that is the background of the direct image 110 ′ without changing the display size of the direct image 110. It looks at you.

  As a result, the background color of the background color variable area 151 is set to the emphasized color, so that the driver's attention can be more reliably directed.

  Moreover, in the first display example, the second display example, and the third display example described above, the driver is grasped by detecting the obstacle by changing the display content of the display unit 2. At the same time, it is possible to prompt the driver to view the video 110 directly by voice or sound.

[Effect of the embodiment]
As described above in detail, according to the driving support device to which the present invention is applied, when an obstacle is detected, the overhead view image 100 and the direct image 110 obtained by imaging the direction of the detected obstacle with respect to the own vehicle. Since the images are simultaneously displayed, even when the bird's-eye view video 100 is displayed, the difference between the relative position with the obstacle and the relative position with the actual obstacle in the bird's-eye view image 100 can be confirmed on the same screen. Can do.

  For example, the positional relationship between the actual host vehicle 10 and the other vehicle 160 is as shown in FIG. 10A, and when the predicted track locus 161 in which the host vehicle 10 moves straight back is drawn, the predicted track locus of the host vehicle 10 161, there is a possibility that the actual host vehicle 10 exists. On the other hand, as shown in FIG. 10B, the positional relationship between the host vehicle 10 and the other vehicle 160 is deviated from the actual position 160 ′ due to the image distortion at the time of creating the bird's-eye view image 100. In the case where the actual vehicle 10 does not exist in the expected course locus 161 of the host vehicle, the positional relationship may be erroneously recognized. On the other hand, in the driving assistance device, when the obstacle is detected, not only the overhead view image 100 but also the direct image 110 can be displayed at the same time. Can be grasped.

  In addition, according to this driving support device, when the obstacle is detected, the obstacle display 121 for emphasizing the part of the vehicle approaching the obstacle is displayed in the bird's-eye view image 100. Therefore, the obstacle display 121 is displayed. By simply referring to the bird's-eye view video 100 including the vehicle, it is possible to grasp the direction in which the obstacle exists with respect to the host vehicle 10.

  Furthermore, according to this driving support device, the obstacle display 121 of the overhead view image 100 is displayed so as to cover the part of the host vehicle that is approaching the obstacle. The image 110 can be confirmed directly.

  Furthermore, according to this driving support apparatus, as the obstacle display 121 of the overhead view image 100, a direct image obtained by capturing the direction of the obstacle with respect to the own vehicle at a portion that covers the part of the own vehicle that is approaching the obstacle. Since 110 is displayed, it is possible to recognize the obstacle by directly viewing the video 110 from the display of the obstacle display 121.

  Furthermore, according to this driving support device, the virtual display indicating the type of the obstacle is displayed on the portion of the overhead view image 100 that covers the part of the own vehicle that is approaching the obstacle. Not only the direction of the object but also the type of obstacle can be grasped.

  Furthermore, according to this driving support device, since the virtual pattern indicating the shape and color of the obstacle is displayed on the portion of the overhead image 100 that covers the part of the own vehicle that is approaching the obstacle, the own vehicle 10 As well as the direction of the obstacle with respect to the shape, the shape and color of the obstacle can be grasped.

  Furthermore, according to this driving support device, when an obstacle is detected, the display form of the guideline display 141 for grasping the positional relationship between the own vehicle and the vehicle surroundings in the overhead view image 100 is changed. The driver can be surely grasped the existence of the object.

  Furthermore, according to this driving support device, when an obstacle is detected when the guideline display 141 for grasping the positional relationship between the host vehicle and the surroundings of the vehicle is displayed in the overhead view image 100, another guideline display is displayed. Since the guideline display 141 closer to the obstacle is erased, the driver can be surely grasped the presence of the obstacle.

  Furthermore, according to this driving support device, when an obstacle is detected, the obstacle alarm display 131 for emphasizing a portion where the obstacle is approaching is directly displayed in the image 110. The driver can be surely grasped.

  Furthermore, according to this driving support device, the obstacle warning display 131 of the direct image 110 is displayed by surrounding the portion where the obstacle is approaching with a line, so that the presence of the obstacle can be more reliably indicated to the driver. It can be grasped.

  Furthermore, according to the driving support device, when an obstacle is detected, the display form of the guideline display 141 for directly grasping the positional relationship between the host vehicle and the surroundings of the vehicle is directly changed. The driver can be surely grasped the existence of the object.

  Furthermore, according to this driving support device, when an obstacle is detected while the guideline display 141 for grasping the positional relationship between the host vehicle and the surroundings of the vehicle is directly displayed in the video 110, another guideline display is displayed. Since the guideline display 141 closer to the obstacle than 141 is blinked, the driver can be surely made aware of the presence of the obstacle.

  Furthermore, according to this driving support device, when an obstacle is detected while the guideline display 141 for grasping the positional relationship between the host vehicle and the surroundings of the vehicle is directly displayed in the video 110, another guideline display is displayed. Since the color of the guideline display display closer to the obstacle is changed, the driver can be surely grasped the presence of the obstacle.

  Furthermore, according to this driving support device, when an obstacle is not detected, the display size of the overhead image 100 is made larger than the display size of the direct image 110, and the parking frame for the host vehicle 10 is When the direction is grasped and an obstacle is detected, the display size of the video 110 can be directly made larger than the display size of the bird's-eye view image 100, and the relative position of the host vehicle 10 with the obstacle can be grasped.

  Furthermore, according to this driving support device, when an obstacle is detected, the background color of the image 110 is directly changed, so that the line of sight can be more reliably directed to the image 110 than the overhead image 100.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it is possible to change.

DESCRIPTION OF SYMBOLS 1 Image pick-up part 2 Display part 3 Control part 4 Image | video process part 5 Obstacle detection part 6 Vehicle signal acquisition part 7 Operation part 100 Overhead image 110 Direct image 121 Obstacle display 131,132 Obstacle warning display 141 Guideline display 151 Background color variable region

Claims (11)

In the video display device that presents the situation around the vehicle to the driver,
A plurality of cameras that image different directions around the vehicle;
Coordinates the position of each pixel of a plurality of current direct images captured by the plurality of cameras to the position of each pixel of the overhead image based on a conversion table that defines a pixel arrangement relationship between the direct image and the overhead image. Video processing means for creating a bird's-eye view video,
Display means for displaying the overhead view video;
An obstacle detection means for detecting an obstacle close to the host vehicle ,
The display means displays an obstacle warning that covers an area from the host vehicle to the obstacle in the overhead video when the obstacle detecting means detects the obstacle. apparatus. The display means simultaneously displays two or more videos including the overhead video and one of the plurality of current direct videos, and determines the size of the direct video from the size of the overhead video. Is also displayed larger
The display area of the display means is divided into at least one direct video display area of the plurality of current direct videos and the overhead video display area, and any one of the plurality of current direct videos. The video display device according to claim 1, wherein a display area for the two direct videos and a display area for the overhead video are each fixed. The display means, when an obstacle is detected by said obstacle detecting means, the direct image of the captured direction with respect to the vehicle of the obstacle detected by the obstacle detecting unit, displaying the overhead image at the same time The video display device according to claim 1, wherein: The display means, the portion to be hidden covered by the obstacle alarm display, the image display device according to claim 1, characterized in that displaying the direct image of the captured direction with respect to the vehicle of the obstacle. The display means is configured to change a display form of a guideline display for grasping a positional relationship between the own vehicle and the vehicle surroundings in the overhead view video when an obstacle is detected by the obstacle detection means. The video display device according to claim 1 . When the obstacle is detected by the obstacle detection means while the guide means is displayed in the bird's-eye view image to understand the positional relationship between the host vehicle and the surroundings of the vehicle, The video display device according to claim 5 , wherein the guideline display close to the obstacle is also erased. When the obstacle is detected by the obstacle detection means while the guide means is displayed in the direct video for grasping the positional relationship between the host vehicle and the surroundings of the vehicle, the display means displays other guideline displays. 4. The video display device according to claim 2, wherein the guideline display close to the obstacle is blinked. When the obstacle is detected by the obstacle detection means while the guide means is displayed in the direct video for grasping the positional relationship between the host vehicle and the surroundings of the vehicle, the display means displays other guideline displays. 4. The video display device according to claim 2, wherein the color of the guideline display close to the obstacle is also changed. When the obstacle detecting means detects no obstacle, the display means makes the overhead video display size larger than the direct video display size, and when the obstacle detecting means detects the obstacle. 4. The video display device according to claim 3, wherein the display size of the direct video is larger than the display size of the overhead view video. The video display device according to claim 2, wherein the display unit changes a background color of the direct video or the overhead view video when an obstacle is detected by the obstacle detection unit. In a video display method for presenting a situation around a vehicle to a driver, the video display method includes:
Imaging different directions around the vehicle using multiple cameras;
Coordinates the position of each pixel of a plurality of current direct images captured by the plurality of cameras to the position of each pixel of the overhead image based on a conversion table that defines a pixel arrangement relationship between the direct image and the overhead image. To create a bird's-eye view video,
An obstacle detection stage for detecting obstacles close to the vehicle,
A display stage for displaying the overhead image,
When an obstacle is detected in the obstacle detection stage, the display stage displays an obstacle alarm display that covers an area from the own vehicle to the obstacle in the overhead view video. Method.