JP5310017B2 - Vehicle display device and vehicle periphery visual display system including the same - Google Patents

Description

  The present invention relates to a display device for a vehicle that displays a peripheral visual field of a vehicle and a vehicle peripheral visual field display system including the same.

  2. Description of the Related Art Conventionally, a vehicle display device that displays an image of a vehicle rear or rear side on a monitor in a vehicle compartment is known (see, for example, Patent Document 1). In this vehicle display device, a part of a captured image of the rear of the vehicle captured by the external camera is cut out and displayed on the monitor as a cut-out image. The driver can recognize the state behind the vehicle by visually recognizing the cut-out image displayed on the monitor, similarly to visually recognizing the reflected virtual image of the side mirror or the rearview mirror.

  In a normal side mirror or room mirror, the driver can change the visual field range of the reflected virtual image by moving the eye position from the normal driving posture. On the other hand, in the above-described display device for a vehicle, the visual field range can be changed by changing the cutout position of the image by a driver's switch operation or the like.

JP 2008-18760 A

  In a normal side mirror or room mirror, the visual field range is changed by moving the position of the eyes, so that the driver can empirically recognize the deviation from the original visual field range in the normal driving posture. In addition, when the driver returns to the normal driving posture and returns the position of the eyes, the reflected virtual image of the mirror can be easily returned to the original visual field range. Therefore, the driver can intuitively recognize the positional relationship between the reflected virtual image and the actual object.

  On the other hand, in the above-described display device for a vehicle, if the cutout position of the image is changed by a switch operation, it is possible to intuitively recognize how much the image displayed on the monitor deviates from the original visual field range. Have difficulty. Therefore, a sensory shift tends to occur in the positional relationship between the display image on the monitor and the actual object.

  An object of the present invention is to provide a vehicle display device and a vehicle peripheral visual field display system that can easily recognize how much the displayed visual field range is deviated from the original visual field range.

  In order to achieve the above object, the present invention employs the following technical means.

The invention according to claim 1 is a display device for a vehicle that displays an image obtained by cutting out a photographed image of the peripheral vision of the vehicle inputted from photographing means provided in the vehicle in a predetermined cutout range, and is set in advance. A cut-out range setting unit that generates and stores data of a default cut-out range to be generated and generates data of a variable cut-out range that is variably set from the default cut-out range within the range of the shot image, and data of the shot image And a cut-out image generation unit that generates cut-out image data obtained by cutting out the variable cut-out range from the shot image based on the variable cut-out range data, and a shot image based on the data of the initial cut-out range and the variable cut-out range An indicator generating unit for generating indicator data visually showing a relationship between the range of the first cutout range, the default cutout range, and the variable cutout range; A display image generation unit that generates display image data in which an indicator is displayed on a part of the cut-out image based on the data of the extracted image and the indicator, and an image display that displays the display image based on the data of the display image And an indicator includes an outer frame line that represents the outer edge of the range of the captured image, an inner frame line that represents the outer edge of the variable cutting range inside the outer frame line, and an initial cut-out range within the outer frame line 2 vertical lines representing the width of the vehicle and two horizontal lines representing the height of the initial cutout range within the outer frame line, and the cutout range setting unit is a vehicle speed signal representing the vehicle running speed, or the vehicle The vehicle display device is characterized in that an inner frame line representing the outer edge of the variable cutout range is moved from the default cutout range and enlarged or reduced based on a shift position signal representing the shift position .

Thereby, the relationship between the range of the captured image, the initial setting extraction range, and the variable extraction range can be visually indicated by the indicator displayed together with the extraction image as the display image. Therefore, the passenger can easily recognize how much the displayed visual field range is deviated from the original visual field range. Further, since the relationship between the captured image range, the initial cutout range, and the variable cutout range can be indicated by a line, an indicator can be displayed while suppressing a reduction in the amount of display information of the cutout image. Further, the cutout range setting unit can change the variable cutout range based on the vehicle speed signal indicating the travel speed of the vehicle, can set the variable cutout range as appropriate based on the travel speed, and can change the variable cutout range and the initial set cutout range. Can be easily recognized by the indicator, or the variable cutout range can be changed based on the shift position signal indicating the shift position of the vehicle, so that the variable cutout range can be appropriately set based on the shift position, The relationship between the changed variable cutout range and the default cutout range can be easily recognized by the indicator.

According to a second aspect of the present invention, when the cutout range setting unit moves and expands the inner frame line from the initial cutout range based on a vehicle speed signal indicating the travel speed of the vehicle, the travel speed is relatively low. The variable cutout range is set to a relatively narrow range near the center of the photographed image and matches the default cutout range.When the traveling speed becomes high, the variable cutout range is expanded toward the outside of the vehicle, The clipped image is displayed in a wide area, and the rear viewing range is enlarged .

Thereby, when the traveling speed becomes high, the variable cutout range is enlarged toward the outside of the vehicle, the cutout image is displayed in a wide area, and the rear viewing range is enlarged. In addition, the variable cutout range can be set as appropriate based on the traveling speed, and the relationship between the changed variable cutout range and the initial set cutout range can be easily recognized by the indicator.

According to a third aspect of the present invention, the cutout range setting unit shifts the inner frame line representing the outer edge of the variable cutout range from the initial cutout range and reduces the shift based on a shift position signal representing the shift position of the vehicle. When the position is reverse, the variable cut-out range is reduced from the default cut-out range and moved downward, and the cut-out image is displayed as a narrowed area indicating the road surface and obstacles behind the vehicle .

As a result, the clipped image becomes a narrowed area display showing the road surface and obstacle behind the vehicle in an enlarged manner. In addition, the variable cutout range can be set as appropriate based on the shift position, and the relationship between the changed variable cutout range and the initial set cutout range can be easily recognized by the indicator.
The invention described in claim 4 is characterized in that the area inside the outer frame line is displayed by reducing the entire captured image. As a result, the relationship between the captured image range, the default cropping range, and the variable cropping range can be shown more clearly, so that the displayed field range is deviated from the original field range to the occupant. It can be made to recognize more clearly.

The invention according to claim 5 is characterized in that a region between the inner frame line and the outer frame line is displayed in gray out. Thereby, the relationship between the range of the captured image and the variable cutout range can be shown more clearly.

In the invention according to claim 6 , the area inside the inner frame line is displayed by being filled with the first color, and the area between the inner frame line and the outer frame line is the first color. Is characterized by being displayed in a different second color. Thereby, the relationship between the range of the captured image and the variable cutout range can be shown more clearly.

The invention according to claim 7 further includes first operation means for outputting a first operation signal to the cutout range setting unit based on an operation of the occupant, and the cutout range setting unit is variable based on the first operation signal. It is characterized by changing the cutout range.

  Accordingly, the occupant can easily change the variable cutout range, and the relationship between the changed variable cutout range and the initial set cutout range can be easily recognized by the indicator.

The invention according to claim 8 is characterized in that the cutout range setting unit returns the variable cutout range to the initial cutout range when a predetermined time has elapsed since the first operation signal was last input.

  As a result, the occupant can change the viewable range by changing the variable cutout range as necessary, and can return to the original viewable range without performing a special operation when the necessity decreases.

The invention according to claim 9 further includes second operation means for outputting a second operation signal to the cutout range setting unit based on the operation of the occupant, and the cutout range setting unit is initialized based on the second operation signal. It is characterized by changing the setting cutout range.

  Thus, the occupant can easily change the initial cutout range, and the relationship between the changed variable cutout range and the captured image range can be easily recognized by the indicator.

According to a tenth aspect of the present invention, the cutout range setting unit changes the variable cutout range based on an eye point signal representing a passenger's viewpoint position.

  Thus, the variable cutout range can be set as appropriate based on the eye point, and the relationship between the changed variable cutout range and the initial set cutout range can be easily recognized by the indicator.

According to an eleventh aspect of the present invention, there is provided a vehicle peripheral visual field display system including the vehicle display device according to the invention described above and a photographing unit. Thereby, the effect similar to the said invention is acquired.

1 is a diagram illustrating a schematic configuration of a front part of a vehicle interior of a vehicle on which a vehicle display device and a vehicle periphery visual field display system according to a first embodiment are mounted. It is a plane schematic diagram of a vehicle. It is a figure which shows an example of the picked-up image image | photographed with the right side camera. It is a figure which shows an example of the display image displayed on a right monitor. It is a figure which expands and shows an indicator. It is a figure which shows the functional block of the display apparatus for vehicles of 1st Embodiment, and a vehicle periphery visual field display system. It is a figure which shows an indicator when the initialization cutout range moves. It is a flowchart which shows the flow of control performed by the cutting range setting part in normal mode. It is a figure explaining the example of the variable cutting range set based on a vehicle speed signal. It is a figure explaining the example of the variable cutting range set based on a shift position signal. It is a figure which shows the other example of a display of an indicator. It is a figure which shows the other example of a display of an indicator.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram illustrating a schematic configuration of a vehicle interior front portion of a vehicle on which the vehicle display device of the present embodiment and a vehicle peripheral visual field display system including the vehicle display device are mounted. FIG. 2 is a schematic plan view of the vehicle. As shown in FIGS. 1 and 2, a left camera (photographing means) 24 for photographing the rear side of the left side of the vehicle is disposed in the vicinity of the base portion of the left door mirror 25 of the vehicle. The left camera 24 captures the area A that the driver (occupant) visually recognizes with the left door mirror 25 and outputs captured image data. A right camera (photographing means) 34 for photographing the rear side of the right side of the vehicle is disposed in the vicinity of the base portion of the right door mirror 35 of the vehicle. The right camera 34 captures a region B visually recognized by the driver with the right door mirror 35 and outputs captured image data. Here, when the vehicle includes a fender mirror instead of a door mirror, the left camera 24 and the right camera 34 may be disposed in the vicinity of the base portion of the fender mirror. A rear camera (photographing means) 45 for photographing a region C behind the vehicle and outputting photographed image data is disposed at the rear of the vehicle.

  In the instrument panel 41 in the front part of the passenger compartment, the combination meter 1 is arranged in front of the driver's seat where the driver is seated. The combination meter 1 includes a plurality of instruments such as a speedometer that displays the traveling speed of the vehicle, a tachometer that displays the engine speed, and a fuel meter that displays the remaining fuel amount. The combination meter 1 is arranged so that visual recognition is not hindered by the steering wheel 42.

  On the upper left side of the combination meter 1, a left monitor (image display means) 21 that displays a cut-out image generated based on a photographed image of the left camera 24 is disposed. The left monitor 21 includes, for example, a transmissive liquid crystal display panel including a plurality of pixels arranged in a matrix, an illumination device that illuminates the liquid crystal display panel from behind, a control unit that controls the liquid crystal display panel and the illumination device, have. The control unit drives the liquid crystal display panel based on image data input from the outside, and adjusts the transmittance of illumination light for each pixel. As a result, the cut image is displayed on the display screen of the left monitor 21.

  On the upper right side of the combination meter 1, a right monitor (image display means) 31 for displaying a cut-out image generated based on a photographed image of the right camera 34 is disposed. A rear monitor (image display means) 43 that displays a cut-out image generated based on a photographed image of the rear camera 45 is disposed in the center of the instrument panel 41 in the vehicle width direction. The rear monitor 43 is also used as a monitor for a navigation device, an audio device, or the like. The configuration of the right monitor 31 and the rear monitor 43 is substantially the same as the configuration of the left monitor 21.

  The steering wheel 42 is provided with an operation switch 47 at a position where there is no trouble in driving and the driver can easily perform manual operation. The operation switch 47 is configured by a jog switch or a touch pad. The operation switch 47 outputs a predetermined operation signal to the extraction range setting unit 120 described later based on the operation of the driver. The operation switch 47 has a function for setting, for example, the position and size of the variable cutout range that is temporarily changed with respect to the initial cutout range displayed on the normal monitor. The operation switch 47 also has a function for setting the position and size of the initial cutout range according to the position and preference of the eyes when the driver first gets on the vehicle. The operation switch 47 is provided with a mode changeover switch for switching between a normal mode for adjusting the variable cutout range and an initial setting mode for adjusting the initial cutout range. The operation switch 47 functions as a first operation unit that outputs a first operation signal in the normal mode, and functions as a second operation unit that outputs a second operation signal different from the first operation signal in the initial setting mode. To do. Further, the operation switch 47 instantaneously returns the variable cutting range changed from the initial cutting range to the initial cutting range so that the temporarily changing visual field range can be quickly returned to the original visual field range. Button or specific operation (for example, double click) may be set.

  An eye point camera 49 constituting an eye point detection device (not shown) is disposed near the base portion of the room mirror 48. The eye point camera 49 captures the vicinity of the driver's face and outputs image data to the image processing unit of the eye point detection device. The image processing unit performs recognition processing for detecting the position of the driver's face and eyes based on the input image data, and detects the position of the driver's eyes based on the recognition result. From the eye point detection device, information on the position of the driver's eyes and the change thereof is output to the vehicle display device 100 as an eye point signal.

  Hereinafter, a display image displayed on the right monitor 31 will be described as an example. FIG. 3 shows an example of a captured image 50 captured by the right camera 34. FIG. 4 shows an example of a display image 60 displayed on the right monitor 31 based on the captured image 50. As shown in FIGS. 3 and 4, in the display image 60 displayed on the right monitor 31, the photographed image 50 photographed by the right camera 34 is cut out in the cutout range (within the thick frame in FIG. 3) at the center. The cut out image 61 is included. The cut-out image 61 is displayed on almost the entire display area of the right monitor 31. For example, the cutting range includes an initial setting cutting range that is set in advance by the driver and a variable cutting range that is variably set based on the initial setting cutting range. The variable cutout range is a visual field range that is actually cut out as the cutout image 61. Normally, the initial cutout range and the variable cutout range coincide with each other.

  In addition, the display image 60 includes an indicator 62 arranged to be superimposed on, for example, the upper right corner of the cutout image 61. The indicator 62 visually indicates the relationship between the captured image range, the default cutout range, and the variable cutout range.

  FIG. 5 shows the indicator 62 in an enlarged manner. FIG. 5A shows an example in which the initial cutout range matches the variable cutout range. A laterally long rectangular outer frame line 63 is drawn on the outermost side of the indicator 62 by a thin solid line. The outer frame line 63 represents the outer edge of the captured image range of the right camera 34. Inside the outer frame line 63, a horizontally elongated inner frame line 64 is drawn by a thick solid line thicker than the outer frame line 63. The inner frame line 64 represents the outer edge of the variable cutout range displayed on the right monitor 31.

  Between the two sides extending in the vertical direction of the outer frame line 63, two straight lines (horizontal lines) 65 and 66 extending in the horizontal direction are drawn by thin broken lines. Further, two straight lines (vertical lines) 67 and 68 extending in the vertical direction are drawn by thin broken lines between the two sides of the outer frame line 63 extending in the horizontal direction. The oblong rectangle defined by these four straight lines 65, 66, 67, 68 represents the outer edge of the default cutout range. That is, the straight lines 65, 66, 67, and 68 function as a guide for allowing the driver to recognize the position and size of the initial cutout range. The straight line 65 represents the upper edge position of the initial cutout range, the straight line 66 represents the lower edge position of the initial cutout area, and the interval between the straight lines 65 and 66 is the vertical height of the initial cutout area. Represents. The straight line 67 represents the outer edge position in the left direction of the initial cutout range, the straight line 68 represents the right outer edge position of the initial cutout area, and the interval between the straight lines 67 and 68 represents the horizontal width of the initial cutout area. Represents. The driver who has seen the indicator 62 shown in FIG. 5A indicates that the variable cutout range (field-of-view range) displayed on the right monitor 31 is located at the center of the captured image range and that the variable cutout range is displayed. It can be recognized that the position and size match the default cutout range.

  The outer frame line 63, the inner frame line 64, and the straight lines 65, 66, 67, and 68 are line types and lines so that the driver can easily identify each of the photographed image range, the default cutout range, and the variable cutout range. It is desirable to make the thickness of each line or the color of the line (color tone, brightness, contrast) different from each other. Moreover, in order to improve the visibility on the display image 60, it is desirable that the color of these lines is different from the display color of the cut image 61 near the arrangement position of the indicator 62.

  FIG. 5B shows a state in which the position of the variable cutout range is shifted in the upper right direction with respect to the initial set cutout range. In this state, the size of the inner frame line 64 is substantially the same as the rectangle defined by the straight lines 65, 66, 67, and 68, but the position is shifted in the upper right direction. In this example, in order to improve the visibility of the inner frame line 64, the straight lines 65 and 68 are not drawn in the region within the inner frame line 64. However, the driver can recognize the position and size of the initial cutout range based on the straight lines 66 and 67 and a part of the straight lines 65 and 68 drawn outside the inner frame line 64. Accordingly, the driver who has seen the indicator 62 shown in FIG. 5B indicates that the position of the variable cutting range displayed on the right monitor 31 is shifted to the upper right with respect to the initial setting cutting range, and that the variable cutting is performed. It can be recognized that the size of the range is substantially the same as the default cutout range.

  FIG. 5C shows a state in which the size of the variable cutout range is enlarged with respect to the default cutout range. In this state, the size of the inner frame line 64 is enlarged with respect to the size of the rectangle defined by the straight lines 65, 66, 67 and 68. Also in this example, the straight lines 65, 66, 67, 68 are not drawn in the region within the inner frame line 64, but the driver does not draw the straight lines 65, 66, 67, 68 drawn outside the inner frame line 64. The position and size of the initial cutout range can be recognized by a part of. Therefore, the driver who has seen the indicator 62 shown in FIG. 5C indicates that the size of the variable cutout range displayed on the right monitor 31 has been enlarged relative to the initial cutout range, and that the variable cutout range It can be recognized that the position is almost the same as the initial cutout range.

  FIG. 6 shows functional blocks of the vehicle display device 100 and the vehicle peripheral visual field display system 200 in the present embodiment. As shown in FIG. 6, the vehicle peripheral visual field display system 200 includes a vehicle display device 100 and photographing means such as the above-described right camera 34 that outputs photographed image data to the vehicle display device 100. Yes. The vehicle display device 100 includes image display means such as the right monitor 31 described above, operation means such as an operation switch 47, and a control device 110 including a CPU, ROM, RAM, and the like.

  The control device 110 includes a cutout range setting unit 120, a cutout image generation unit 130, an indicator generation unit 140, and a display image generation unit 150 as functional blocks realized by the CPU executing a program stored in the ROM. doing.

  The cutout range setting unit 120 generates, for example, data of an initial cutout range set by a driver's operation, and stores the generated initial cutout range data. Specifically, the cutout range setting unit 120 generates data of the initial cutout range based on the operation signal output from the operation switch 47 in the initial setting mode. The initial cutout range data includes data on the position and size of the cutout range. The initial cutout range is set at the center of the photographed image range as shown in FIG. 3, for example.

  The cut-out range setting unit 120 also includes an operation signal from the operation switch 47 in the normal mode, a vehicle speed signal indicating the traveling speed of the vehicle, a shift position signal indicating the shift position selected by the driver, and an eye from the eye point detection device. Based on the point signal or the like, data of a variable cutout range that is variable within the captured image range is generated. The variable cutout range is a visual field range that is actually displayed on the monitor. The variable cut-out range data includes data on the position and size of the cut-out range.

  The cut-out image generation unit 130 cuts out the variable cut-out range from the picked-up image 50 based on the shot image data from the shooting unit such as the right camera 34 and the variable cut-out range data generated by the cut-out range generation unit 120. Data of the image 61 is generated.

  The indicator generation unit 140 generates data of the indicator 62 as shown in FIGS. 5A to 5C based on the initial setting extraction range data and the variable extraction range data generated by the extraction range setting unit 120. .

  Based on the data of the cut image 61 generated by the cut image generation unit 130 and the data of the indicator 62 generated by the indicator generation unit 140, the display image generation unit 150 performs a predetermined image composition process in FIG. Data of the display image 60 as shown is generated. The display image data generated by the display image generation unit 150 is output to image display means such as the right monitor 31.

  Image display means such as the right monitor 31 displays the display image 60 based on the input display image data.

  Next, an example of a method for setting an initial cutout range performed when a driver first rides on a vehicle on which the vehicle display device 100 and the vehicle peripheral vision display system 200 according to the present embodiment are mounted will be described. To do. The driver operates the mode switch of the operation switch 47 while seated on the seat in order to switch the operation mode of the vehicle display device 100 (cutout range setting unit 120) to the initial setting mode. Thus, the operation mode of the vehicle display device 100 is switched by the mode switching signal output from the operation switch 47.

  Next, the driver operates the operation switch 47 to adjust the initial cutout range so as to correspond to the position and preference of his / her eyes. FIG. 7 shows the indicator 62 when the initial cutout range is moved. As shown in FIG. 7, the straight lines 65, 66, 67, 68 that define the initial cutout range of the indicator 62 are moved, so that the driver can recognize the position and size of the initial cutout range. . At this time, in order to make the driver recognize that it is the initial setting mode, the mode name is displayed in characters on the display screen, the brightness and color tone of the screen is changed, or the screen is blinked. Also good. Alternatively, the initial setting mode may be displayed on a separate dedicated indicator or another monitor.

  Thereafter, the driver operates the mode switch to return the operation mode to the normal mode. Further, after the operation mode is switched to the initial setting mode and the operation switch 47 is not operated for a predetermined time, it may be automatically returned to the normal mode.

  Next, the return operation to the initial set cutting range when the variable cutting range is changed by the driver's operation in the normal mode will be described. FIG. 8 is a flowchart showing a flow of control executed by the cutout range setting unit 120 in the normal mode. As shown in FIG. 8, in the normal mode, the variable cutout range is set to the default cutout range in principle (step S1). At this time, the timer is in a stopped state.

  When the operation signal from the operation switch 47 by the driver's operation is input in step S2, the cutout range setting unit 120 changes the position and size of the variable cutout range based on the operation signal (step S3). . At this time, the timer is reset to start counting. Thereafter, the process proceeds to step S4. On the other hand, when the operation signal from the operation switch 47 is not input in step S2, the process directly proceeds to step S4.

  In step S <b> 4, the cutout range setting unit 120 determines the elapsed time since the operation signal was last input based on the timer value. If the elapsed time is equal to or longer than the predetermined time, the process returns to step S1 to return the variable cutout range to the default cutout range. If the elapsed time is less than the predetermined time, the process directly proceeds to step S5.

  In step S <b> 5, the cutout range setting unit 120 determines whether or not there is an instruction to return to the initial set cutout range by the operation of the operation switch 47 by the driver. If there is a return instruction, the process returns to step S1 to return the variable cutout range to the default cutout range. If there is no return instruction, the process returns to step S2.

  As described above, in this example, when the variable cutout range is changed, if there is a return instruction from the driver, in addition to returning to the default cutout range, the initial cutout is performed even when the operation is not performed for a predetermined time. Return to range.

  The variable cutout range is not only intentionally changed by the driver's operation as described above, but can also be changed by the vehicle speed, the shift position, the eye point, and the like. An example in which the variable cutout range is changed depending on conditions other than the driver's operation will be described using the indicator 62 displayed on the right monitor 31.

  FIG. 9 is a diagram illustrating an example of a variable cutout range set based on the vehicle speed signal. FIG. 9A shows an indicator 62 when the vehicle is traveling at a normal urban traveling speed or less, and FIG. 9B is an indicator when the vehicle is traveling on a highway or the like at high speed. 62 is shown. As already described, the outer frame line 63 represents the outer edge of the captured image 50, and the inner frame line 64 represents the outer edge of the cut-out image 61. As shown in FIGS. 9A and 9B, when the vehicle speed is relatively low, the variable clipping range is set to a relatively narrow range near the center of the captured image 50, and the initial setting clipping is performed. It matches the range. On the other hand, when the vehicle speed increases, the variable cutout range is expanded toward the vehicle outer side (right side), and the cutout image 61 is displayed in a wide area. As a result, when traveling at high speed, the rear viewing range by the right monitor 31 is expanded.

  FIG. 10 is a diagram illustrating an example of a variable cutout range set based on the shift position signal. FIG. 10A shows the indicator 62 when the shift position is other than R (reverse) (during forward or stop), and FIG. 10B shows when the shift position is R (reverse). An indicator 62 is shown. As shown in FIGS. 10A and 10B, when the shift position is R, the variable cutout range is reduced and moved downward, and the cutout image 61 enlarges the road surface and obstacles behind the vehicle. Is displayed. As a result, when the vehicle moves backward, the visibility behind the right monitor 31 is improved.

  As described above, in this embodiment, the indicator 62 displayed together with the cut image 61 as the display image 60 can visually indicate the relationship between the captured image range, the initial set cut range, and the variable cut range. Therefore, according to the present embodiment, the driver can easily recognize how much the visual field range (variable cutout range) displayed on the monitor deviates from the original visual field range (initial cutout range). it can. In addition, the driver can recognize the relative positional relationship between the captured image range and the visual field range.

  Moreover, in this embodiment, the indicator 62 is shown by the combination of the outer frame line 63, the inner frame line 64, and the straight lines 65-68. For this reason, it is possible to minimize hiding of the cutout image 61 by the indicator 62 on the display image 60. Therefore, the indicator 62 can be displayed while suppressing a decrease in the amount of display information of the cut image 61.

  Further, in the present embodiment, the cutout range setting unit 120 sets the variable cutout range based on the operation signal from the operation switch 47. Therefore, the driver can temporarily change the visual field range displayed on the monitor, and can easily recognize by the indicator 62 how much the changed visual field range is deviated from the original visual field range.

  In the present embodiment, when the operation switch 47 is not operated for a predetermined time, the cutout range setting unit 120 returns the variable cutout range to the initial cutout range. Therefore, the driver can temporarily change the visual field range as necessary, and can return to the original visual field range without performing a special operation when the necessity decreases.

  Further, in the present embodiment, the cutout range setting unit 120 sets an initial set cutout range based on an operation signal from the operation switch 47. Accordingly, the driver can set the visual field range normally displayed on the monitor according to his / her own eye position and preference, and the indicator 62 can easily set the relative positional relationship between the changed visual field range and the captured image range. Can be recognized.

  In the present embodiment, the cutout range setting unit 120 changes the variable cutout range based on the vehicle speed signal. Therefore, the visual field range displayed on the monitor is appropriately changed based on the traveling speed, and the driver can easily recognize how much the changed visual field range is deviated from the original visual field range by the indicator 62.

  Further, in the present embodiment, the cutout range setting unit 120 changes the variable cutout range based on the shift position signal. Therefore, the visual field range displayed on the monitor is appropriately changed based on the shift position, and the driver can easily recognize how much the changed visual field range is deviated from the original visual field range by the indicator 62.

  In the present embodiment, the cutout range setting unit 120 changes the variable cutout range based on the eye point signal. Therefore, the visual field range displayed on the monitor is appropriately changed according to the driver's eye point, and the driver can easily recognize how much the changed visual field range is deviated from the original visual field range by the indicator 62. .

(Other embodiments)
In the said embodiment, although the indicator 62 comprised only by the outer frame line 63, the inner frame line 64, and the straight lines 65-68 is used, another indicator can also be used. 11 and 12 show other display examples of the indicator. In the indicator 72 shown in FIG. 11, the area inside the inner frame line 74 is filled with the first color (the first color is shown in white in FIG. 11), and the inner frame line 74 is displayed. The area between the outer frame line 73 and the outer frame line 73 is filled with a second color that is different in tone, brightness, contrast, etc. from the first color (in FIG. 11, the second color is represented by a dot pattern). Represent). In addition, straight lines 75, 76, 77, 78 indicating the outer edge of the initial cutout range are superimposed and drawn. In this example, the relationship between the captured image range in the outer frame line 73 and the variable cutout range in the inner frame line 74 can be shown more clearly.

  Here, in this example, drawing of the outer frame line 73 and the inner frame line 74 as images can be omitted. In this case, an outer frame line is shown at the outer edge of the range painted with the first color, and an inner frame line is shown at the boundary between the range painted with the first color and the range painted with the second color. .

  In the indicator 82 shown in FIG. 12, the area inside the outer frame line 83 displays the entire captured image in a reduced size. The image inside the inner frame line 84 is displayed with the original brightness, and the image between the inner frame line 84 and the outer frame line 83 is grayed out (in FIG. 12, it is grayed out display). Represented by a dot pattern). In addition, straight lines 85, 86, 87, and 88 indicating the outer edges of the initial cutout range are drawn in an overlapping manner. In this example, by displaying the captured image on the indicator 82 in a reduced size, the relationship among the captured image range, the initial cutout range, and the variable cutout range can be shown more clearly. In addition, by displaying the outside of the inner frame line 84 in gray out, the relationship between the captured image range and the variable cutout range can be shown more clearly.

  In the above embodiment, the vehicle rear view and the rear side are exemplified as the vehicle peripheral visual field, but may be the vehicle front or the like which becomes the blind spot of the driver.

  In the above-described embodiment, an example in which the captured image range, the initial cutout range, and the variable cutout range are all rectangular has been described. However, in the case of wide-area shooting using a convex lens (fisheye lens), these shapes are used. Is not limited to a rectangular shape. In this case, the outer frame line indicating the outer edge of the captured image range and the inner frame line indicating the outer edge of the variable cutout range are not limited to a rectangular shape, and the line indicating the outer edge of the initial cutout range is not limited to a straight line.

  Furthermore, in the above-described embodiment, the example in which the indicator is arranged at the upper right corner of the cut-out image has been described. However, the indicator may be arranged at another position of the cut-out image. It is desirable that the indicator placement position be a position that does not significantly impair the display information amount of the cut-out image.

21 Left monitor (image display means)
24 Left camera (photographing means)
31 Right monitor (image display means)
34 Right camera (photographing means)
43 Rear monitor (image display means)
45 Rear camera (photographing means)
47 Operation switch (operation means)
50 Captured image 60 Displayed image 61 Cut image 62, 72, 82 Indicator 63, 73, 83 Outer frame line 64, 74, 84 Inner frame line 65, 66, 75, 76, 85, 86 Straight line (horizontal line)
67, 68, 77, 78, 87, 88 Straight line (vertical line)
DESCRIPTION OF SYMBOLS 100 Display apparatus for vehicles 110 Control apparatus 120 Cutout range setting part 130 Cutout image generation part 140 Indicator generation part 150 Display image generation part 200 Vehicle periphery visual field display system

Claims (11)

A vehicle display device that displays an image obtained by cutting out a photographed image of a peripheral visual field of a vehicle input from a photographing unit provided in the vehicle in a predetermined cutout range,
Generating and storing data of a preset initial cutout range that is set in advance, and a cutout range setting unit that generates data of a variable cutout range that is variably set from the initial cutout range within the range of the captured image;
Based on the data of the photographed image and the data of the variable cutout range, a cutout image generation unit that generates cutout image data obtained by cutting out the variable cutout range from the shot image;
Indicator generation for generating indicator data for visually indicating the relationship between the captured image range, the default cutout range, and the variable cutout range based on the data of the default cutout range and the data of the variable cutout range And
A display image generation unit that generates display image data in which the indicator is displayed on a part of the cut image based on the cut image data and the indicator data;
Image display means for displaying the display image based on the data of the display image ,
The indicator includes an outer frame line that represents an outer edge of the range of the captured image, an inner frame line that represents an outer edge of the variable cutout area inside the outer frame line, and an initial cutout area within the outer frame line. Two vertical lines representing the width and two horizontal lines representing the height of the initial cutout range within the outer frame line,
The cutout range setting unit moves an inner frame line representing an outer edge of the variable cutout range from the initial set cutout range based on a vehicle speed signal indicating the traveling speed of the vehicle or a shift position signal indicating the shift position of the vehicle. And a vehicle display device that is enlarged or reduced . The cut-out range setting unit moves and expands the inner frame line from the initial set cut-out range based on a vehicle speed signal indicating the travel speed of the vehicle, and when the travel speed is relatively low, The variable cutout range is set to a relatively narrow range near the center of the photographed image and matches the initial cutout range,
2. The vehicle according to claim 1, wherein when the traveling speed becomes high, the variable cutout range is enlarged toward an outside of the vehicle, the cutout image is displayed in a wide area, and a rear view range is enlarged . Display device. The cutout range setting unit moves and reduces the inner frame line from the initial set cutout range based on a shift position signal indicating the shift position of the vehicle, and when the shift position is retracted, the variable cutout range is 3. The apparatus according to claim 1, wherein the image is reduced from the initial cut-out range and moved downward, and the cut-out image is displayed as a narrowed area indicating a road surface and an obstacle behind the vehicle. Vehicle display device. 4. The vehicular display device according to claim 1, wherein an area inside the outer frame line displays the entire captured image in a reduced size. 5. 5. The vehicle display device according to claim 1, wherein a region between the inner frame line and the outer frame line is displayed in gray out. 6. The area inside the inner frame line is displayed filled with the first color,
Region between the outer border and the inner border is any one of claims 1 to 3, characterized in that the indication is filled with a second color different from said first color The vehicle display device according to the item . A first operation means for outputting a first operation signal to the cut-out range setting unit based on an operation of the occupant;
The cropping range setting unit, a vehicle display device according to any one of claims 1 to 6, wherein changing said variable cut range based on the first operation signal. 8. The vehicle according to claim 7 , wherein the cutout range setting unit returns the variable cutout range to the initial set cutout range when a predetermined time has elapsed since the first operation signal was last input. Display device. A second operation means for outputting a second operation signal to the cut-out range setting section based on an operation of the occupant;
The cropping range setting unit, a vehicle display device according to any one of claims 1 to 8, characterized in that to change the initial setting cut-out area on the basis of the second operation signal. The vehicle display device according to any one of claims 1 to 9 , wherein the cutout range setting unit changes the variable cutout range based on an eyepoint signal representing a passenger's viewpoint position. Vehicle peripheral vision display system comprising: the vehicle display device according, and the imaging means in any one of claims 1 to 10.

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