JP2005346177A - Information presenting device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a driver to provide surely recognize the correspondence of the operation support information and the object just after the operation support information appears in an information presenting device for a vehicle which presents information to the driver by displaying operation support information for an object in a foreground which is viewed from the inside of a vehicle. <P>SOLUTION: An operation support information display control unit 4 creates operation support information for an object in a foreground which is viewed from the inside of a vehicle, and displays it at a head-up display 3, and increases the display size of the operation support information just after displaying it, and then gradually reduces the display size in order to finally display the operation support information in a predetermined display size on the object. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle information presentation apparatus that presents operation support information to a driver of a vehicle.

  Conventionally, as a device for presenting information for supporting the operation of a vehicle to a driver, there is a navigation system that presents the driver with map information around the current position of the vehicle, and the current system provided by the navigation system. There is a device that provides a driver with the name of a building or road by using a map information around the location and attaching a label to a landscape that can be seen from inside the vehicle.

As a landscape labeling device that superimposes and displays a label on a landscape image that can be seen from the inside of the vehicle, the image is acquired by a digital camera or the like, and the current position is acquired by a GPS receiver. The label is attached to the scenery seen from the inside of the vehicle by obtaining the position, generating label information based on the name of the structure and other attribute information, and displaying this label information superimposed on the scenery image. The thing is known (refer patent document 1).
Japanese Patent Application Laid-Open No. 11-66349

  However, since the conventional example disclosed in Patent Document 1 described above merely displays the label information on the landscape image when the label information is displayed superimposed on the landscape image, immediately after the label information appears. Has a problem that it is difficult for the driver to recognize what the label information indicates. In particular, when there are a plurality of information and objects to be displayed, it is difficult to grasp the relationship between the displayed information and the object, and it is difficult for the driver to identify to which object the displayed information is information. There was a problem.

  The vehicle information presentation device according to the present invention is a vehicle information presentation device having a function of superimposing and displaying operation support information on an object in the foreground viewed by a driver. Immediately after the information is superimposed and displayed, the operation support information is displayed in a large display size for the object, and then the display size is gradually reduced, and finally the operation support information is displayed on the object. It is characterized by comprising operation support information display control means for performing display such that the image is reduced to a predetermined display size.

  In the vehicle information presentation device according to the present invention, immediately after displaying the operation support information, the object is displayed in a large display size, and then the display size is gradually reduced, and finally the object is displayed. Since the display is superimposed on the object with a predetermined display size, the driver can easily recognize the relationship between the operation support information and the object even immediately after the operation support information appears.

  Embodiments showing the best mode for carrying out the vehicle information presentation apparatus according to the present invention will be described below.

  FIG. 1 is a block diagram illustrating a configuration of a vehicle information presentation device 1 according to the present embodiment.

  As shown in the figure, the vehicle information presentation apparatus 1 of the present embodiment includes a stereo camera 2 that acquires an image ahead of the vehicle, a head-up display 3 that displays operation support information on a windshield, and operation support information. An operation support information display control unit 4 for controlling the presentation process to display operation support information, a steering angle sensor 5 for detecting the steering angle of the steering, a car navigation system 6 for acquiring the current position of the vehicle, and the front A radar 7 that measures an inter-vehicle distance from a vehicle and an inter-vehicle distance measurement unit 8 that calculates a relative distance from a preceding vehicle based on information (inter-vehicle distance) from the radar 7 are provided.

  Here, the stereo camera 2 continuously captures the foreground in front of the vehicle, acquires image data corresponding to the foreground that the driver is viewing, and transmits the image data to the operation support information display control unit 4.

  The head-up display 3 receives the control by the operation support information display control unit 4 as a display device, and displays the operation support information to the driver.

  The operation support information display control unit 4 (operation support information display control means) is connected to the stereo camera 2, the steering angle sensor 5, the car navigation system 6, and the inter-vehicle distance measurement unit 8, and is input from each function block. Based on the information, various operation support information described later is generated and displayed on the head-up display 3.

  The steering angle sensor 5 detects how much the steering device that determines the traveling direction of the vehicle is operated by the driver. For example, in the case of a steering wheel, the steering angle sensor 5 determines the rotation angle based on when the vehicle is traveling straight. It transmits to the information display control unit 4.

  The car navigation system 6 includes a map data, a GPS antenna, a gyro sensor, and the like, as well as a widely used one, and indicates a position on the map data where the vehicle to which the system is attached is located on the map data. It has a function of searching based on positioning data obtained by the gyro sensor and presenting the current position of the vehicle to the driver together with map data around the current position. In addition, a function for guiding a route from the current position to the destination is provided so that the driver can efficiently move to the destination while the vehicle is traveling by setting the destination. Furthermore, the three-dimensional shape data of the main buildings existing on the road for this route guidance are stored, and by providing a function that can draw an image close to the building that the driver actually sees while driving, It is configured so that easy-to-understand operation support information can be presented to the driver.

  The inter-vehicle distance measurement unit 8 calculates a relative distance from another vehicle running in front of or in front of the vehicle driven by the driver based on information from the radar 7, and the operation support information display control unit 4 Send to.

  Next, the operation of the vehicle information presentation apparatus according to the present embodiment will be described.

  As a technique used in the vehicle information presentation device 1 of the present embodiment, a technique for detecting an obstacle in the outside world in a traveling vehicle, providing information to the driver, and assisting visual recognition is disclosed in JP JP 2001-344597 A and JP 9-35177 A have already been proposed. In the vehicle information presentation apparatus 1 according to the present embodiment, obstacles ahead are detected using such conventional technology, and operation support information is displayed. First, display of such operation support information will be described.

  FIG. 2 is a diagram schematically showing the foreground that the driver sees while driving the vehicle. As shown in the figure, the center left part shows a preceding vehicle traveling in front of the vehicle being driven, and the center line drawn from the center part with a white broken line below the figure, the center part of the figure The oncoming vehicles indicated by hatching that are partially hidden behind the preceding vehicle are displayed.

  While the vehicle is traveling, the radar 7 or the stereo camera 2 constantly monitors the distance to the obstacle ahead. When the operation support information display control unit 4 determines that the estimated contact time calculated from the distance to the obstacle and the relative speed is earlier than a predetermined value, the operation support information display control unit 4 uses a symbol or a figure based on the imaging of the stereo camera 2. The display position and size in the display area of the head-up display 3 are calculated so that the operation support information displayed as an image is projected in the vicinity of the obstacle image on the driver's eyeball retina. FIG. 3 is an example of presentation of operation support information. A rectangle in the outer frame indicates a display area of the head-up display 3, and a small rectangle in the display area indicates display of operation support information for emphasizing the presence of a preceding vehicle. An image is shown.

  The operation support information display control unit 4 projects the operation support information on the head-up display 3 as shown in FIG. 4 in order to alert the driver that an obstacle is approaching, It is displayed superimposed on the object in the foreground visible from inside the vehicle. As a result, the driver sees the foreground that is visible beyond the head-up display 3 while viewing the driving support information displayed on the head-up display 3, and as a result, an image as shown in FIG. It can be visually recognized that the preceding vehicle as the object is associated with the small rectangle as the operation support information.

  And even if the image of the target object (hereinafter referred to as the target object image) moves on the driver's eyeball retina due to the change in the driving state, by moving the display position of the operation support information so as to follow the movement, The projection operation of maintaining the state where the operation support information is projected in the vicinity of the object image on the eyeball retina of the driver for a predetermined time is continued.

  In this way, among those that display operation support information for guiding an object existing in the foreground at a position near the object as viewed from the driver, an optical transmission type head-mounted display, a head-up display, etc. A method for displaying operation support information on the foreground itself or using a CRT or LCD etc. to superimpose an image obtained by photographing the foreground and a display image for guide is used in the driver's field of view. Even if there is an object, it is effective because it is possible to intuitively and easily display which object is associated with the operation support information.

  In addition, the object and the operation support information are not only displayed in the vicinity of the object, but also the display position of the operation support information is moved in accordance with the movement of the object. Because it is easy for the driver to intuitively recognize the target object and the driving support information as a group, the vicinity of the target object image to which the driving support information is to be related, for example, on the driver's eyeball retina Even if another object is projected, there is an advantage that it is easy to determine which object is the operation support information corresponding to which object.

  The vehicle information presentation device 1 according to the present embodiment has a characteristic display function described below in addition to the operation support information display function as described above. That is, in the vehicle information presentation apparatus 1 of the present embodiment, immediately after displaying the operation support information, the object is displayed in a large display size, and then the display size is gradually reduced, and the predetermined size is displayed on the object. The display size is set to. The reason why the display size of the operation support information is changed in this way is that it is difficult for the driver to identify which object the operation support information is moving to immediately after the operation support information appears. In particular, it becomes difficult to identify when there are a plurality of objects.

  Therefore, in the operation support information display control unit 4 of this embodiment, when operation support information (hereinafter referred to as a symbol) represented by symbols, figures, images, etc. appears, a large display is first displayed on the object. The animation is displayed in the size, and the animation is reduced to a predetermined display size while the display size is sequentially reduced immediately after that. As a result, it is possible to express to which object in the foreground the operation support information is associated.

  Here, an example of this animation display will be described with reference to FIGS. FIG. 5 shows a circular symbol displayed as operation support information, and the object is an oncoming vehicle. FIG. 6 is a diagram for explaining an animation display performed when the operation support information shown in FIG. 5 is presented.

  In FIG. 6, images seen by the driver are arranged at intervals of about 0.1 to 0.5 seconds in order from the top, and initially a circular symbol with a large display size is displayed for the object. Thereafter, the display size is gradually reduced, and finally, a circular symbol having a display size corresponding to the size of the object is displayed on the object. This makes it easy for the driver to recognize the relationship between the operation support information and the object even immediately after the operation support information has appeared, and even if there are multiple objects, the driver The relationship with the object can be easily recognized.

  However, such animation display is performed when the following conditions are satisfied. The condition is that the distance between the object and the driver is longer than a predetermined value, and the relative speed between the object and the driver is lower than the predetermined speed. Another condition is when the distance between the driver and the object is longer than a predetermined value, and the moving speed of the object image on the eyeball retina of the driver who sees the foreground is lower than the predetermined speed. Furthermore, another condition is that the distance between the object and the driver is longer than a predetermined value and the relative speed between the object and the driver is lower than the predetermined speed, and the driver sees the foreground. This is a case where the moving speed of the object image on the eyeball retina is lower than a predetermined speed.

  If these conditions are met, the amount of movement of the object image on the eyeball retina of the driver who sees the foreground is often small, so the driver can determine which object the operation support information is displayed for. If the animation is displayed when the above-mentioned conditions are satisfied, the driver can easily relate the operation support information to the target object even immediately after the operation support information is displayed. It becomes possible to recognize.

  Conversely, excessive animation display may cause disadvantages such as annoying the driver, so it is desirable to suppress the display frequency of animation display in this embodiment to the minimum necessary. Therefore, if the animation display is performed only when the above-described conditions are satisfied, the relationship between the driving support information and the target object can be easily provided to the driver without bothering the driver. It will be possible to recognize.

  Next, a case where an animation display is performed with the center position of the object image on the eyeball retina of the driver and the center position of the operation support information being matched will be described with reference to FIG.

  In FIG. 7, images viewed by the driver are arranged at intervals of about 0.1 to 0.5 seconds in order from the top, and the dotted line connects the center positions of the objects. As shown in the figure, in the process of changing the display size, the center position of the driving support information displayed by the circular symbol is fixed so as to coincide with the center position of the target object on the driver's eyeball retina. By displaying, the symbol moves on the dotted line. However, the dotted line is drawn for easy understanding of the movement of the center position of the circular symbol, and is not actually displayed on the head-up display 3.

  In this way, when the animation display is performed by fixing the center position of the object image on the eyeball retina of the driver so as to coincide with the center position of the operation support information, an unnatural movement from the viewpoint of the driver, That is, it is possible to realize a movement that does not include unnecessary information that the driver misunderstands.

  Next, the case where a character string is included in the operation support information will be described with reference to FIGS. FIG. 8 is a diagram illustrating an example of operation support information including a character string, and FIG. 9 is a diagram illustrating an example when operation support information including a character string is displayed superimposed on a foreground image.

  The rectangle of the outer frame shown in FIG. 8 shows the display area of the head-up display 3, and the small circular symbol in the display area and the character string “ambulance” displayed thereon are what the oncoming vehicle is and the type of vehicle. It is added as operation support information for emphasizing this. In this way, by displaying the operation support information including the circular symbol and the character string associated therewith on the head-up display 3, the driver can see the other side of the head-up display 3 while viewing the operation support information. Since the foreground is seen, as a result, an image as shown in FIG. 9 appears on the driver's eyeball retina, and the driver visually recognizes that the oncoming vehicle is associated with the circular symbol and the character string on it. Will be able to.

  In addition to the preceding vehicle and the oncoming vehicle, for example, the name and description of the object are displayed on the object that is conspicuous from the driver, such as a high-rise building, by the same method as the display form shown in FIGS. The driving assistance information indicates the location of the destination and the route change point when the route guidance is performed when using the car navigation system 6 by making the driver visually recognize that the object is associated with its name and description. Can be displayed on the head-up display 3 to make the route guidance information easier to understand.

  Next, the case where the display size of the operation support information is displayed in proportion to the distance between the object and the driver will be described (not shown).

  Here, the display size and the animation display time in the initial state immediately after displaying the operation support information are set to be proportional to the distance between the object and the driver. For example, when presenting a symbol with a preceding vehicle at a distance of 100 m as an object, a symbol of 10 times the size normally used is displayed first, and then the symbol is displayed at a constant rate over time for 1 second. The size is reduced, and a symbol of a display size normally used is displayed after 1 second. On the other hand, when presenting a symbol with a preceding vehicle at a distance of 50 m as an object, a symbol with a display size five times the normal size is displayed first, and then constant for 0.5 seconds. The symbol size is reduced by this ratio, and a symbol having a display size normally used is displayed after 0.5 seconds.

  When the display size is changed according to the distance between the driver and the object, the distance can be accurately determined only by this display when the driver has just started using such a display. It is difficult to recognize how many meters away, but by gaining experience through continuous use, the driver can intuitively recognize the distance to the object through such display. Will be able to. In addition, when there are a plurality of objects and a plurality of operation support information is displayed, the driver may intuitively recognize a close object and a distant object depending on the size of the operation support information. it can.

  Next, in addition to the method based on the change in display size as described above, a method for intuitively recognizing the distance will be described (not shown).

  In the symbol animation display described above, the distance between the object and the driver is expressed by the change in the symbol display size, but humans also recognize the sense of distance based on various other visual cues. Is known, and it is possible to further support the perception of a sense of distance by using these cues. For example, an object looks more blurred as it is farther away, or an object with the same brightness appears darker as it is farther away at night. In addition, when there is an overlapping relationship between the distant objects and the nearby objects, the distant objects are hidden behind the nearby objects. Such facts can also be expressed by an animated symbol display.

  First, a description will be given of a case where a distant object is displayed in a blurred manner. Image processing that produces such a blurring effect is, for example, for each pixel of the pixel near the edge of the symbol, an average value with the surrounding pixels is calculated with respect to its luminance and transparency, and the value is calculated as a new luminance at that pixel, This can be achieved by implementing an algorithm that sets the transparency.

  In this way, the driver is able to intuitively recognize the distance to the target object by blurring and displaying the outline of the operation support information as the object is located farther away.

  Next, a process for making a distant object appear dark will be described (not shown).

  The process of making the objects located far away appear darker is to reduce the brightness of the pixels constituting the symbol or increase the transparency as the object is located farther in the symbol animation display. Try to change. The rate of change may be proportional to the change in display size or in proportion to the square of the change in display size in order to support the driver's perception of distance. Further, it may be changed based on the external environment, for example, a time zone such as nighttime or dusk, the weather, whether or not the vehicle is traveling in a tunnel, and the road surface condition. Of these, the time zone and the road surface condition can be determined by the car navigation system 6, and the weather is estimated by providing an illuminometer, a raindrop sensor, or referring to the operation status of the vehicle wiper or headlight. It is possible.

  By displaying the operation support information with a lower display brightness as the object is located farther in this way, the driver can intuitively recognize the distance to the object.

  Next, the case where the operation support information of a distant object and the operation support information of a nearby object are displayed in an overlapping manner will be described.

  As in this embodiment, when a symbol for a distant object and a symbol for a near object are close to each other as viewed from the driver and are in an overlapping relationship, the distant symbol is hidden behind the nearby symbol. Displaying is a particularly effective expression when another symbol appears in the vicinity of the symbol when the symbol is already displayed on the head-up display 3.

  Here, FIG. 10 shows an example of an animation display when symbols are overlapped. FIG. 10 shows an example in which a square symbol 101 is already displayed with respect to the preceding vehicle, and a circular symbol 102 indicating an oncoming vehicle appears on the square symbol 101. An image seen by the driver is shown in FIG. They are arranged at intervals of about 0.1 to 0.5 seconds in order from the top.

  In this example, the operation support information display control unit 4 maintains the relative distance between the object on which each symbol is displayed and the driver, so that the front and rear as viewed from the driver of a plurality of symbols to be displayed. Calculate the relationship. The four-frame display shown in FIG. 10 represents an animation display in which the circular symbol 102 moves from the position close to the driver toward the oncoming vehicle, but the upper two frames have the circular symbol 102 being the square symbol 101. In the lower two frames, after the circular symbol 102 has moved, it is positioned behind the square symbol 101, indicating that the square symbol 101 and the circular symbol 102 overlap each other. Expressed by change.

  Such an expression can be realized relatively easily by the operation support information display control unit 4 managing the relative distances between the plurality of objects associated with each symbol and the driver. it can. And since the context of multiple objects in the foreground that the driver is viewing corresponds to the context of multiple driving support information, the association between the objects and the driving support information becomes easier to understand, Even in the animation display that expresses the distance between the object and the driver when the symbol appears, the overlap can be a clue to judge the sense of distance, so the driver can easily understand the sense of distance. become able to.

  As described above, in the vehicle information presentation device 1 according to the present embodiment, immediately after the operation support information appears, the object is displayed in a large display size, and then the display size is gradually reduced. So that the driver can easily recognize the relationship between the operation support information and the object even immediately after the operation support information appears. Even when there are a plurality of objects, the driver can easily recognize the relationship between the operation support information and the objects.

  Moreover, in the vehicle information presentation apparatus 1 according to the present embodiment, as a condition for performing animation display, when the distance between the driver and the object is longer than a predetermined distance, the relative speed between the vehicle and the object is When the speed is lower than the predetermined speed, the animation is displayed only when the moving image of the object image on the eyeball retina of the driver is lower than the predetermined speed. The relationship between the operation support information and the object can be easily recognized without giving a sense.

  Furthermore, in the vehicle information presentation apparatus 1 according to the present embodiment, the vehicle is first displayed so that the center position of the object image on the eyeball retina of the driver matches the center position of the operation support information, and then gradually displayed. Since the display is reduced in size and finally displayed on the target with a predetermined display size, the target indicated by the driving support information is easy to recognize, which is unnatural to the driver. It is possible to realize movement, that is, movement that does not include unnecessary information that the driver misunderstands.

  Moreover, in the vehicle information presentation apparatus 1 according to the present embodiment, the operation support information is first displayed with the display size determined so as to be proportional to the distance between the object and the driver. The driver can intuitively recognize the distance to the object, and when a plurality of objects are present and a plurality of operation support information is displayed, the driver is determined according to the size of the operation support information. Can intuitively recognize near and far objects.

  Furthermore, in the vehicle information presentation apparatus 1 according to the present embodiment, the driver assistance is provided because the operation support information is displayed with a character string added in addition to any of symbols, figures, or images. The object can be recognized with certainty, and the route guidance information can be made easier to understand.

  Moreover, in the vehicle information presentation apparatus 1 according to the present embodiment, when a plurality of objects are present and a plurality of operation support information is displayed, the operation support information is superimposed and displayed based on the front-rear relationship of the objects. Therefore, the driver can more easily grasp the sense of distance due to the overlapping relationship.

  Furthermore, in the vehicular information presentation apparatus 1 according to the present embodiment, the outline of the operation support information is blurred and displayed as the object becomes far away. Using this, the driver can intuitively recognize the distance to the object.

  Moreover, in the vehicle information presentation apparatus 1 according to the present embodiment, the display brightness of the operation support information is reduced as the object is farther away, and thus the human perception characteristic that the farther the object looks darker is used. The driver can intuitively recognize the distance to the object.

  FIG. 11 is a block diagram illustrating a configuration of the vehicle information presentation device 11 according to the present embodiment.

  As shown in the figure, the vehicle information presentation device 11 of the present embodiment is provided with a line-of-sight measurement device 12 in addition to the vehicle information presentation device 1 shown in the first embodiment. It is the same. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  Here, the line-of-sight measurement device 12 can be realized by using a general device proposed by, for example, Japanese Patent Laid-Open No. 09-251539, and can measure the driver's line-of-sight direction. I just need it.

  Next, the operation of the vehicle information presentation device 11 according to the second embodiment will be described.

  In the vehicle information presentation device 11 of the present embodiment, the center position when the symbol that is the operation support information appears is matched with the center position of the visual field when the driver is looking straight ahead. Then, animation display is performed so that the center position of the symbol (or one point inside or near) is reduced to a predetermined display size while the display size is sequentially reduced while approaching the object. Yes.

  Here, an example of the animation display in a present Example is shown in FIG. As shown in the figure, a circular symbol having a center point is displayed at the same position as the center position of the display area of the head-up display 3, and then the center position of the circular symbol is set to a position where an oncoming vehicle as an object can be seen. An animation is displayed such that the display size is reduced to a predetermined display size while being gradually reduced while approaching. In FIG. 12, diagonal dotted lines are drawn on the four frames arranged vertically, but this is drawn to make it easier to understand the movement of the center position of the circular symbol. It is not displayed on the display 3.

  Therefore, in the animation display described above, even if the direction the driver is looking at is not the direction of the oncoming vehicle, when the circular symbol appears, the direction of the oncoming vehicle is determined from the straight forward direction that the driver is likely to see. It becomes possible to guide the line of sight in the direction.

  Furthermore, in the vehicle information presentation device 11 of the present embodiment, the line-of-sight measurement device 12 measures the direction in which the driver is looking before displaying the operation support information, and the operation support information display control unit 4. However, as a result, when it is determined that the driver is looking at the vicinity of the oncoming vehicle, the operation support information is displayed by the method described in the first embodiment. An animation display in which the center position of the circular symbol is moved may be performed.

  Thereby, for example, when the driver is looking away, it is possible to prevent missing an animation display when the symbol appears.

  Furthermore, the line-of-sight measuring device 12 may measure the driver's line-of-sight direction, and a circular symbol may be displayed with the position that matches the measured line-of-sight direction as an initial position. After that, in the same way as the animation display described above, the center position of the circular symbol is brought close to the position where the oncoming vehicle that is the object is visible, and the display size is sequentially reduced to reduce it to a predetermined display size. Animated display that does.

  As a result, it is possible to obtain a more effective gaze guidance effect, and it is possible to realize an unnatural movement from the viewpoint of the driver, that is, a movement that does not include extra information that the driver misunderstands.

  Next, a case where the movement locus when moving to the object immediately after displaying the operation support information is changed according to the characteristics of the object will be described (not shown).

  The movement locus of the center point of the circular symbol in the animation display described above moves linearly from the initial position to the position of the object in FIG. 12, but instead of linear movement, draws an arc or other smooth curve. May be moved. Since the movement trajectory is characterized in this manner, information can be added to the movement of the symbol itself. For example, when displaying a symbol for a highly urgent object, the movement trajectory is linear. In addition, in the case of landmark emphasis or other guidance display at the time of navigation with low urgency, the moving locus can be displayed as an animation as an arc.

  This makes it easier for the driver who has seen the movement trajectory of the operation support information to understand what the symbol is displayed when the symbol is displayed, thereby reducing the recognition time. .

  Next, a case where the character string is moved together with the symbol will be described.

  When displaying the symbol, a character string that describes the object is displayed in addition to the symbol. In this case, in the animation display when the symbol appears, it is important for the recognition that the symbol and the character string have a sense of unity so that the driver can intuitively understand.

 Therefore, an example in which symbols and character strings are simultaneously displayed on the head-up display 3 is shown in FIG. As shown in the figure, simultaneously with the appearance of the circular symbol, a character string written as “Ambulance” also appears, and the position of the character string is moved along with the animation display of the circular symbol. The movement trajectory of the character string position follows the movement of the center point of the circular symbol.

  Therefore, such an animation display has an effect of having a sense of unity in the movement of the circular symbol and the character string from the viewpoint of the driver, and has the effect of further strengthening the association between the circular symbol and the character string. Makes it possible to reduce the time required to recognize which symbol the displayed character string is associated with which symbol or which object the symbol indicates.

  Further, in the above example, not only the character string is moved, but the display size of the character string may be changed corresponding to the change in the display size in the animation of the circular symbol (not shown). However, if the size of the character string is too large or too small, the readability of the character string may deteriorate. Therefore, it is important to change the size of the character string to such an extent that the readability of the character string is not lost.

  Next, information presentation when the vehicle turns right and left will be described (not shown).

  In the situation where the vehicle is traveling along the road, the presentation of operation support information as described above is effective, but in the situation where the foreground flows greatly to the left and right, such as when turning right or left, the driver should be careful about the surroundings. Because it is necessary to drive, the presentation of operation support information must be kept to a minimum. In addition, because the foreground flows, the object that the operation support information is pointing to also increases the amount of movement of the object image on the driver's eye retina, so the advantage of animation display when the symbol appears is It will decrease.

  Therefore, it is effective in that the annoyance felt by the driver can be reduced not to perform the animation display when the symbol appears while the driver is turning the vehicle.

  Therefore, in the vehicle information presentation device 11 according to the present embodiment, it is detected by the steering angle sensor 5 whether or not the driver is making a turning operation. When it is detected that the vehicle is turning, the operation support information The display control unit 4 interrupts the display of the operation support information. As a result, the operation support information can be interrupted while the vehicle is turning, and the troublesomeness of the driver can be reduced.

  Next, priority in the case where a plurality of operation support information is displayed simultaneously will be described (not shown).

  When a plurality of operation support information appears, the driver's attention may be dispersed if they appear at the same time. Therefore, when the operation support information display control unit 4 determines that there is a possibility of presenting a plurality of operation support information at the same time, the urgency of each of the plurality of information is evaluated and sequentially displayed in descending order of urgency. Try to do.

  As an algorithm for assigning this priority, the urgency is set in descending order from the one having the highest possibility of contact between the vehicle and the object. For example, when the relative distance between the driver and the object is short, it may be determined that the degree of urgency is higher than when the driver is long, and in addition to the relative distance, the relative speed between the driver and the object The contact time may be estimated in consideration of acceleration, and the earlier the time, the higher the urgency level may be determined.

  In addition, when a plurality of operation support information items appear, when an item that performs animation display and an item that does not perform animation display such as a guidance display are expected to appear at the same time, the operation support information display control unit 4 displays an animation. It is presented first from the operation support information of the appearance method that does not. As a result, it is possible to prevent the next operation support information from being displayed after waiting for the animation display to end and to delay the presentation of information, and to provide information on events such as landmark display and guidance display. Can be performed more timely.

  As described above, in the vehicle information presentation device 11 according to the present embodiment, first, the operation support information is displayed in a large display size with respect to the object at the center position of the display area of the vehicle information presentation device, and thereafter Since the display size is gradually reduced from the beginning and displayed on the object at a predetermined display size, the direction of the object from the straight forward direction that the driver is likely to see is high. The driver's line of sight can be guided to the driver so that the driver can easily recognize the object.

  Moreover, in the vehicle information presentation apparatus 11 according to the present embodiment, the operation support information displayed at the center position of the display area is moved onto the object while drawing a movement locus changed according to the characteristics of the object. Since it did in this way, the driver | operator can grasp | ascertain the characteristic of a target object by the movement locus | trajectory of operation assistance information, and can recognize a target object more easily by this.

  Furthermore, in the vehicle information presentation device 11 according to the present embodiment, the display size of the character string is changed in proportion to the change of the operation support information so as not to lose the readability of the character string. It is possible to recognize the object more clearly and clearly.

  Moreover, in the vehicle information presentation apparatus 11 according to the present embodiment, since the operation support information is not displayed while the vehicle is turning, it is possible to reduce the troublesomeness of the driver.

  Furthermore, in the vehicle information presentation apparatus 11 according to the present embodiment, when there are a plurality of objects and when a plurality of operation support information is displayed at the same time, the relative distance between the object and the driver is reduced. Since the operation support information is displayed in order, the operation support information with the higher priority can be displayed first, and thus the driver can easily recognize important objects.

  Further, in the vehicle information presentation apparatus 11 according to the present embodiment, when there are a plurality of objects and a plurality of operation support information is displayed at the same time, the object is estimated by estimating the contact time between the object and the vehicle, and the contact time is accelerated. Since the operation support information to the objects is displayed in order, the operation support information with the higher priority can be displayed first, and thus the driver can easily recognize the important object.

  Further, in the vehicle information presentation device 11 according to the present embodiment, when there are a plurality of objects and a plurality of operation support information is displayed at the same time, the operation support information that does not perform animation display is displayed rather than the operation support information that performs animation display. Since it is displayed first, it is possible to prevent the presentation of the operation support information from being delayed by waiting for the end of the animation display.

1 is a block diagram illustrating a configuration of a vehicle information presentation device according to Embodiment 1. FIG. The figure which represented typically the foreground which a driver | operator sees while driving a vehicle. The figure which shows an example of operation assistance information. The figure which shows an example at the time of displaying operation assistance information superimposed on the target object in the foreground visible from the inside of a vehicle. The figure which shows an example at the time of displaying a circular symbol as operation assistance information on the oncoming vehicle which is a target object. The figure for demonstrating the animation display performed when driving assistance information is shown. The figure which shows an example of the animation display in the case of making the center position of operation assistance information correspond with the center position of a target object. The figure which shows an example of the operation assistance information containing a character string. The figure which shows an example at the time of superimposing and displaying the operation assistance information containing a character string on the target object in a foreground. The figure which shows an example of the animation display in the case of displaying a some symbol overlapped. FIG. 6 is a block diagram illustrating a configuration of a vehicle information presentation device according to a second embodiment. The figure for demonstrating the case where the center position of a symbol is moved from the center of the display area of a head-up display to the center of a target object. The figure which shows an example in the case of displaying a symbol and a character string simultaneously on a head-up display.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle information presentation apparatus 2 ... Stereo camera 3 ... Head-up display 4 ... Operation assistance information display control unit 5 ... Steering angle sensor 6 ... Car navigation system 7 ... Radar 8 ... Inter-vehicle distance measurement unit 11 ... Vehicle information presentation Device 12: Eye-gaze measuring device 101, 102 ... Symbol 102 ... Symbol

Claims (17)

In the vehicle information presentation device having a function of displaying the operation support information superimposed on the object in the foreground seen by the driver,
Immediately after the operation support information is superimposed on the object, the operation support information is displayed with a large display size on the object, and then the display size is gradually reduced. An information presentation apparatus for a vehicle, comprising operation support information display control means for reducing the operation support information to a predetermined display size.   When the distance between the driver and the object is longer than a predetermined distance and the relative speed between the vehicle and the object is lower than the predetermined speed, the operation support information display control means The vehicle information presentation device according to claim 1, wherein the operation support information is superimposed and displayed.   When the distance between the driver and the object is longer than a predetermined distance and the moving speed of the image of the object on the retina of the driver is lower than a predetermined speed, the operation support information display control unit is The vehicle information presentation apparatus according to claim 1, wherein the operation support information is superimposed and displayed on an object.   The operation support information display control means is a case where the distance between the driver and the object is longer than a predetermined distance, and the moving speed of the image of the object on the retina of the driver is lower than a predetermined speed. The vehicle information presentation device according to claim 1, wherein the operation support information is superimposed and displayed on the object when a relative speed between the vehicle and the object is lower than a predetermined speed.   The operation support information display control means fixes and displays the fixed image at a position where the center of the image of the object on the eyeball retina of the driver coincides with the center position of the operation support information. The vehicle information presentation device according to any one of claims 1 to 4. Equipped with a gaze measuring means for measuring the driver's gaze direction,
The operation support information display control means matches the center of the driver's line-of-sight direction measured by the line-of-sight measurement means with the center position of the display area, and immediately after displaying the operation support information, the center of the display area is displayed. The vehicle information presentation device according to claim 1, wherein the operation support information is displayed at a position, and then the operation support information is superimposed and displayed while being close to the object.   The operation support information display control means superimposes and displays the center position of the operation support information on the object in a predetermined display size while moving along with the object so as to draw a straight or curved movement locus. The vehicle information presentation device according to claim 6.   The said operation support information display control means displays the said operation support information by the display size set so that it might be proportional to the distance between the said target object and a driver | operator. The vehicle information presentation apparatus according to item 1.   The vehicle operation according to any one of claims 1 to 8, wherein the operation support information is any one of a symbol, a figure, and an image, and is displayed together with a character string associated with the symbol. Information presentation device.   The said operation support information display control means changes the display size of the said character string in proportion to the change of the display size of the said operation support information to such an extent that the readability of the said character string is not lost. The vehicle information presentation device described in 1.   The operation support information display control means superimposes and displays the operation support information based on the front-rear relationship of the object when the object is present in a plurality and the operation support information is displayed in a plurality. The vehicle information presentation device according to any one of claims 1 to 10.   The said operation assistance information display control means blurs and displays the outline of the said operation assistance information as the distance of the said target object and a driver | operator becomes long, The display of any one of Claim 1 thru | or 11 characterized by the above-mentioned. The vehicle information presentation device described in 1.   The said operation support information display control means reduces the display brightness | luminance of the said operation support information as the distance of the said target object and a driver | operator becomes long. The vehicle information presentation device described.   The vehicle information presentation device according to any one of claims 1 to 13, wherein the operation support information display control means does not display the operation support information while the vehicle is turning.   The operation support information display control means is configured to provide operation support to an object in which a relative distance between the object and the driver is shortened when a plurality of the objects are present and the operation support information is simultaneously displayed. The vehicle information presentation apparatus according to claim 1, wherein information is displayed in order from the information.   The operation support information display control means estimates the contact time between the object and the vehicle when there are a plurality of the objects and displays the operation support information at the same time, and the object whose contact time is earlier The vehicle information presentation device according to any one of claims 1 to 14, wherein the vehicle information display device sequentially displays the operation support information for the vehicle. When there are a plurality of the objects and the plurality of the operation support information are displayed at the same time, the operation support information display control means displays the operation support information without changing the display size than the operation support information displayed by changing the display size. The vehicle information presentation device according to any one of claims 1 to 14, wherein the operation support information is displayed first.

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