JP2017181588A - Projection device, shield, projection method and projection program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projection device S that can cause a driver D to visually recognize an area likely to be actually invisible by a sun visor 1 without losing an original function as the sun visor 1.SOLUTION: A projection device comprises: an angle sensor 5 that detects an angle of a movable type sun visor 1 directing at an exterior of a vehicle C and shielding a field of view of a driver D, in which on the sun visor 1, a projection image to be obtained by correcting image data obtained through shooting of an area serving as a dead corner due to the sun visor 1 by a camera 2 is projected,; and an image processing unit 10 that corrects the image data on the basis of the detected angle, and causes a projection image corresponding to post-corrected image data to be projected on the sun visor 1 using a projector 3.SELECTED DRAWING: Figure 3

Description

  The present invention belongs to a technical field of a projection device, a shielding object, a projection method, and a projection program. More specifically, the present invention relates to a projection device, a projection method, and a projection method for displaying an image to be visually recognized by a driver or a passenger of a vehicle. It belongs to the technical field of the projection program and the shielding object.

  In general, when viewed from the viewpoint of a driver sitting in a driver's seat, for example, the vehicle has a shield that generates a blind spot outside the vehicle. Examples of such a vehicle shield include a pillar and a sun visor in a lowered state. The existence of such a blind spot is a serious problem in safe driving, for example, when a small child enters an area where the blind spot is formed. As a document describing the prior art in view of this point, for example, the following Patent Document 1 is cited. In the technology disclosed in Patent Document 1 below, a display such as a liquid crystal display is provided on the vehicle compartment side of a vehicle member that obstructs the driver's field of view, such as a sun visor or a door. Then, based on the position information indicating the position of the driver and the state of the vehicle member, an image of an area that becomes a blind spot by the vehicle member is cut out from an image taken outside the vehicle by a camera or the like. The correction is made according to the state of the vehicle member, and then displayed on the display.

JP 2009-6893 A

However, according to the technique described in Patent Document 1 above,
(A) For example, if a display is provided inside the sun visor, there is a problem in convenience as a sun visor due to its thickness and size.
(A) Due to the presence of the display, it is not possible to use a function that can be attached to a mirror, a card holder, or the like that has been conventionally provided as a sun visor.
(C) The presence of the display impairs decoration as a sun visor.
There was a problem.

  Therefore, the present invention has been made in view of the above-described problems, and one example of the problem is that the original function as a shielding object such as a sun visor is not visually impaired by the shielding object. It is an object of the present invention to provide a projection device, a projection method, a projection program, and a shielding object capable of causing a passenger to visually recognize a blind spot area that cannot be obtained.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that the occupant is obstructed by a shield such as a movable sun visor provided in the vehicle, which blocks the field of view of the occupant facing outside the vehicle. The shielding object on which the projection image corresponding to the corrected shooting information obtained by correcting the shooting information obtained by shooting the blind spot area outside the vehicle, which is a blind spot of the vehicle, is shot by shooting means such as a camera is projected with the occupant. A detection unit such as an angle sensor for detecting a state in the relationship; a correction unit such as an image processing unit that corrects the shooting information and generates the corrected shooting information based on the state information indicating the detected state; A projection control unit such as an image processing unit that projects the projection image corresponding to the generated corrected photographing information onto the shielding object using a projection unit such as a projector.

  In order to solve the above-mentioned problem, an invention according to claim 8 is a projection method executed in a vehicle, wherein a movable type provided in the vehicle and blocking a passenger's field of view toward the outside of the vehicle. A projection image corresponding to corrected shooting information obtained by correcting shooting information obtained by shooting a blind spot area outside the vehicle, which is a blind spot of the occupant, by a shooting means such as a camera is projected by a shield such as a sun visor. A detection step of detecting a state of the shield in relation to the passenger, a correction step of correcting the shooting information and generating the corrected shooting information based on the state information indicating the detected state; A projection control step of projecting the projection image corresponding to the generated corrected photographing information onto the shielding object using projection means such as a projector.

  In order to solve the above-mentioned problem, the invention according to claim 9 is a movable type in which a computer mounted on a vehicle blocks a field of view of a passenger facing outside the vehicle and is provided in the vehicle. A projection image corresponding to corrected shooting information obtained by correcting shooting information obtained by shooting a blind spot area outside the vehicle, which is a blind spot of the occupant, by a shooting unit such as a camera is projected by a shield such as a sun visor. Detecting means for detecting a state of the shield in relation to the occupant, correcting means for correcting the photographing information based on state information indicating the detected state, and generating the corrected photographing information; The projection image corresponding to the generated corrected photographing information is caused to function as a projection control unit that projects the projection image onto the shielding object using a projection unit such as a projector.

  According to the invention according to any one of claims 1, 8 and 9, the projection image corresponding to the corrected shooting information obtained by correcting the shooting information obtained by shooting the blind spot area outside the vehicle is obtained. The state of the projected shielding object is detected. Then, corrected shooting information is generated based on the state information indicating the detected state, and a projection image corresponding to the corrected shooting information is projected onto the shielding object. Therefore, the projection image corresponding to the corrected photographing information corrected based on the state of the shielding object on which the projection image is projected is optically projected onto the shielding object by the projection unit, so that the original function of the shielding object itself Without damaging the vehicle, it is possible to allow the passenger to visually recognize the blind spot area that is actually invisible due to the shield.

  In order to solve the above-mentioned problem, the invention according to claim 2 is the projection device according to claim 1, wherein the shielding object intersects the direction of the line of sight of the occupant facing the blind spot area. The detection means detects the rotation angle of the shield in relation to the occupant as the state, and the correction means Based on the state information indicating the detected angle, a trapezoidal correction process is performed on the shooting information to generate the corrected shooting information.

  According to the invention described in claim 2, in addition to the action of the invention described in claim 1, the shielding object rotates about an axis in a direction intersecting with the direction of the sight line of the passenger facing the blind spot area. It is possible. Then, the angle of rotation of the shielding object in relation to the passenger is detected, and trapezoidal correction processing based on state information indicating the angle is applied to the shooting information to generate corrected shooting information. Therefore, by performing the trapezoidal correction process based on the angle of the shielding object, it is possible to make the occupant clearly see the blind spot area that is actually invisible.

  In order to solve the above-mentioned problem, the invention according to claim 3 is the projection apparatus according to claim 1 or 2, wherein position detection means such as a viewpoint position sensor for detecting the viewpoint position of the passenger is provided. Further, the correction unit is configured to correct the shooting information and generate the corrected shooting information based on the state information and the viewpoint position information indicating the detected viewpoint position.

  According to the invention described in claim 3, in addition to the operation of the invention described in claim 1 or 2, the corrected photographing information is generated based on the state information and the viewpoint position information. It is possible to make the passenger visually recognize the blind spot area that cannot be performed more clearly.

  In order to solve the above-described problem, the invention according to claim 4 is the projection device according to any one of claims 1 to 3, wherein the shielding object is a sun visor provided in the vehicle. The image processing apparatus further includes a backlight correction unit such as a backlight correction unit that performs a backlight correction process on the photographing information and outputs the result to the correction unit.

  According to the invention described in claim 4, in addition to the operation of the invention described in any one of claims 1 to 3, the shielding object is a sun visor, and the imaging information obtained by the imaging means is The backlight is corrected and output to the correction means. Therefore, even when it is necessary to block the sunlight using the sun visor, the blind spot area that cannot be visually recognized by the sun visor can be clearly seen by the passenger while reducing the influence of the sunlight.

  In order to solve the above-described problem, according to a fifth aspect of the present invention, in the projection apparatus according to any one of the first to fourth aspects, the shielding object is provided and the projection image is projected. The detection means detects the state of the screen in relation to the occupant, and the projection control means projects the projection image corresponding to the generated corrected photographing information on the screen. Configured to project onto a surface.

  According to invention of Claim 5, in addition to the effect | action of the invention as described in any one of Claims 1-4, the screen on which a projection image is projected is provided in the shield, The state in relation to the screen occupant is detected, and the projection image corresponding to the corrected shooting information is projected onto the projection surface of the screen. By using a dedicated screen, the blind spot area can be seen more clearly by the occupant. Can be made.

In order to solve the above-described problem, the invention according to claim 6 is the projection apparatus according to any one of claims 1 to 5, wherein the projection unit is provided in the shield.
Storage means is provided for storing the projection means as the shielding object is stored.

  According to the invention described in claim 6, in addition to the operation of the invention described in any one of claims 1 to 5, the projection means is provided in the shielding object, and accompanying the storing of the shielding object. Since the projection means is also stored, by integrating the shielding object and the projection means, the blind spot area can be clearly seen by the passenger.

  In order to solve the above-mentioned problem, the invention according to claim 7 is a movable shielding object that blocks a field of view of a passenger facing outside the vehicle and is provided in the vehicle. A projection surface corresponding to the photographing information obtained by photographing the blind spot area outside the vehicle, which is a blind spot of the passenger, is photographed by the photographing unit, and the projection image is provided with the passenger. It is comprised so that it may be the said projection image equivalent to the correction | amendment imaging | photography information which corrected the said imaging | photography information based on the state of the said obstruction | occlusion in the relationship.

  According to the seventh aspect of the present invention, the projection image corresponding to the photographing information obtained by photographing the blind spot area outside the vehicle on the movable shielding object provided in the vehicle that blocks the passenger's field of view. Is projected. This projection image is a projection image corresponding to the corrected shooting information obtained by correcting the shooting information based on the state of the shielding object in relation to the passenger. Therefore, since the projection image corresponding to the corrected photographing information corrected based on the state of the shielding object is optically projected onto the shielding object, the shielding object itself is not actually impaired without impairing the original function of the shielding object. Can make a passenger visually recognize a blind spot area that cannot be visually recognized.

  According to the present invention, the state of a shield on which a projection image corresponding to corrected shooting information obtained by correcting shooting information obtained by shooting a blind spot area outside a vehicle is detected. Then, corrected shooting information is generated based on the state information indicating the detected state, and a projection image corresponding to the corrected shooting information is projected onto the shielding object.

  Accordingly, the projection image corresponding to the corrected photographing information corrected based on the state of the shielding object on which the projection image is projected is optically projected onto the shielding object by the projection unit, so that the original function of the shielding object itself Without damaging the vehicle, it is possible to allow the passenger to visually recognize the blind spot area that is actually invisible due to the shield.

1 is an external view of a vehicle equipped with a projection device according to an embodiment. It is an inside view of the vehicle which attached the projection device concerning an embodiment. It is a block diagram which shows the structure of the projection apparatus which concerns on embodiment. It is a flowchart which shows the projection process which concerns on embodiment. It is a side view which shows the structure of a part of projection apparatus which concerns on a 1st modification. It is an external view which shows the structure of the projection apparatus which concerns on a 2nd modification, (a) is a front view at the time of projection which illustrates the state by which the projection image was projected, (b) is a side view at the time of projection (C) is a side view which illustrates the state which stored the projector, (d) is a front view which shows storage of a projector. It is a side view external view which shows a one part structure of the projection apparatus which concerns on a 3rd modification, (a) is a side view external view which shows the 1st example, (b) is the side which shows the 2nd example. FIG. 2C is a first appearance view, and FIG. 2C is a second appearance view showing the second example.

  Next, the form for implementing this invention is demonstrated based on FIG. 1 thru | or FIG. In the embodiment and each modification described below, an image representing the scenery outside the vehicle in a blind spot area due to the use of the sun visor is provided on the indoor side surface of the sun visor attached above the front window of the vehicle. It is an embodiment and each modification when the present invention is applied to a projection device for supporting the driving of the vehicle by the driver by projecting and displaying. At this time, the driver corresponds to an example of a “passenger” according to the present invention.

(I) Embodiment First, an embodiment according to the present invention will be described with reference to FIGS. 1 is an external view of a vehicle to which the projection device according to the embodiment is attached, FIG. 2 is an interior view of the vehicle to which the projection device is attached, and FIG. 3 is a block diagram illustrating a configuration of the projection device. FIG. 4 is a flowchart showing the projection processing according to the embodiment.

  As illustrated in FIGS. 1 and 2, in the projection apparatus S according to the embodiment, a camera that captures the outside of the vehicle C having the rearview mirror BM and the front window G and outputs image data corresponding to the imaging result. 2 is installed toward the front in the traveling direction of the vehicle C. More specifically, the camera 2 is arranged at the upper corner (side the pillar P) on the driver side inside the front window G at a position where the front of the sun visor 1 is not blocked even when the sun visor 1 is lowered. The camera 2 has its shooting direction set so as to pass through the front window G from the position and take a picture of at least the front of the vehicle C. At this time, the installation position and the shooting direction of the camera 2 are set in advance so that an area outside the vehicle C that becomes a blind spot when viewed from the driver when the sun visor 1 is lowered enters at least the shooting range of the camera 2. ing.

  Here, the camera 2 is configured by a digital camera such as a CCD (Charge Coupled Device) camera or a CMOS (Complementary Metal Oxide Semiconductor) camera. The camera 2 shoots a person or an object existing in the shooting range, for example, continuously at a preset time interval, generates image data corresponding to the imaged result, and outputs the image data to a backlight correction unit described later To do. At this time, as an example of a person or an object existing in the shooting range of the camera 2, a passer or a range outside the vehicle C that becomes a blind spot by the lowered sun visor 1 (e.g. Range).

  On the other hand, the projection apparatus according to the embodiment will be described in detail later. However, after the image captured by the camera 2 is subjected to image processing by a backlight correction unit, an image processing unit, and the like, which will be described later, the sun visor is passed through the projector described later. 1 is projected onto the projection plane F on the indoor side. Specifically, on the projection plane F, an image of the scenery outside the vehicle C in a blind spot area is projected / displayed by the sun visor 1 when viewed from the driver's viewpoint position. In the example illustrated in FIG. 2, an image Z of a traffic light that exists in the blind spot region and is captured by the camera 2, and includes an image of a pillar PL that supports the traffic light with respect to the ground, is a projection plane. F is projected. In FIG. 2, the image Z projected on the projection plane F is indicated by dot hatching. At this time, the image Z is such that the lower part of the pillar PL that the driver can actually see through the front window G and the upper part of the pillar in the image Z taken by the camera 2 are continuous. Projected / displayed.

  Further, as illustrated in FIG. 2, the sun visor 1 has a rotating shaft 1a provided in parallel with the upper edge portion of the front window G as in the conventional sun visor, and the rotating shaft 1a is a ceiling CL in the room. It is provided in a state of being supported by a bearing portion 1b fixed to the surface. With this configuration, the sun visor 1 changes the angle of the sun visor 1 with respect to the driver while the driver can manually rotate about the rotation shaft 1a, and further, the sun visor 1 itself can be moved at an arbitrary angle. It is configured to be holdable. In the following description, the angle of the sun visor 1 with respect to the driver is simply referred to as “angle of the sun visor 1”. The angle of the sun visor 1 indicates the angle of rotation from the storage state (for example, the horizontal state) of the sun visor 1, and the sun visor 1 is sequentially changed because the posture is arbitrarily changed by the driver.

  On the other hand, as illustrated in FIG. 2, an angle sensor 5 that detects the angle of the sun visor 1 is provided in the bearing portion 1 b that supports the rotating shaft 1 a of the sun visor 1. The angle sensor 5 detects the rotation angle of the rotation shaft 1a with respect to a reference plane (for example, a horizontal plane including the housed sun visor 1) as an angle of the sun visor 1 by using, for example, a potentiometer or an encoder similar to the conventional one. And output to an image processing unit to be described later.

  In the configuration shown in FIGS. 1 and 2, the sun visor 1 corresponds to an example of the “shielding object” according to the present invention, the camera 2 corresponds to an example of the “photographing unit” according to the present invention, and the angle sensor 5 It corresponds to an example of “detection means” according to the present invention.

  Next, the configuration and operation of the entire projection apparatus according to the embodiment will be described with reference to FIGS.

  As shown in FIG. 3, the projection device S according to the embodiment including the camera 2 and the angle sensor 5 includes the projector 3 provided on the ceiling CL of the vehicle C, in addition to the camera 2 and the angle sensor 5, A viewpoint position sensor 4, the image processing unit 10 including a CPU, a RAM (Random Access Memory), a ROM (Read Only Memory), and the like, the backlight correction unit 11, and a viewpoint position detection unit 12 are configured. . At this time, the projector 3 corresponds to an example of the “projection unit” according to the present invention, the viewpoint position sensor 4 corresponds to an example of the “position detection unit” according to the present invention, and the image processing unit 10 corresponds to the “projection unit” according to the present invention. It corresponds to an example of “correction means” and an example of “projection control means”, respectively, and the backlight correction unit 11 corresponds to an example of “backlight correction means” according to the present invention.

  In this configuration, the viewpoint position sensor 4 captures the face image of the driver D by using a camera or the like installed in a passenger compartment that is substantially the same height as the bonnet B, and outputs the captured result to the viewpoint position detection unit 12. Then, the viewpoint position detection unit 12 analyzes the contents of the photographing result (face image), detects the viewpoint position and the line-of-sight direction of the driver D, and outputs each detection result to the image processing unit 10 as viewpoint position data. To do.

  Here, when the vehicle C is equipped with the sun visor 1 and the viewpoint position sensor 4, a spatial vector (hereinafter referred to as “first vector”) from the position of the sun visor 1 to the position of the viewpoint position sensor 4. ") Is known in advance. Therefore, the data indicating the first vector can be stored in advance in the image processing 10 in a nonvolatile manner. On the other hand, a spatial vector from the position of the viewpoint position sensor 4 to the position of the eye of the driver D (hereinafter, the spatial vector is referred to as a second vector) is calculated from the position of the viewpoint position sensor 4 and the viewpoint position. The viewpoint position detection unit 12 calculates a vector directed to the eye position in the face image photographed by the sensor 4. Therefore, the viewpoint position detection unit 12 uses the line-of-sight vector corresponding to the line of sight as the spatial vector to which the first vector and the second vector are added, and the line-of-sight vector and the sun visor. The viewpoint position of the driver D as a point where 1 intersects is detected.

  On the other hand, the angle sensor 5 detects the angle of the rotating sun visor 1 as illustrated in FIG. 3, and outputs the detection result to the image processing unit 10 as angle data. As described above, the angle of the sun visor 1 is an angle of rotation from the housed state.

  On the other hand, the camera 2 generates the image data corresponding to the photographing range and outputs it to the backlight correction unit 11. Accordingly, the backlight correction unit 11 performs backlight correction processing on the image data by a method similar to the conventional method, for example, and outputs the image data to the image processing unit 10.

  Then, the image processing unit 10 projects an image projected on the indoor-side projection plane F (see FIGS. 1 and 2) of the sun visor 1 based on the viewpoint position data, the angle data, and the image data from the backlight correction unit 11. Projection image data corresponding to Z is generated and output to the projector 3. Then, the projector 3 emits the projection light L corresponding to the projection image data toward the projection plane F, and projects / displays the image Z on the projection plane F (see FIG. 2).

  Next, the projection processing according to the embodiment, which is executed centering on the image processing unit 10, will be described more specifically with reference to FIG. Note that the projection processing according to the embodiment is executed centering on the image processing unit 10 to which the viewpoint position data, the image data, and the angle data are input.

  That is, the projection processing according to the embodiment shown in FIG. 4 is started when, for example, the ACC (Accessory) switch of the vehicle C provided with the projection device S is turned on. When the display processing according to the embodiment is disclosed, as illustrated in FIG. 4, the image processing unit 10 acquires the viewpoint position data and the angle data at that time from the viewpoint position sensor 4 and the angle sensor 5, respectively. (Step S1).

  Next, the image processing unit 10 determines whether or not the sun visor 1 is currently being lowered based on the acquired angle data (that is, whether or not it is in use) (step S2). The determination in step S2 is also a determination as to whether or not an area that is a blind spot outside the vehicle is generated in the driver D by the sun visor 1 being lowered. If it is determined in step S2 that the sun visor 1 is not in the currently lowered state (step S2: NO), the sun visor 1 is in the storage state (the raised state) and the projection processing according to the embodiment is not possible. The image processing unit 10 proceeds to step S7 described later. On the other hand, if it is determined in step S2 that the sun visor 1 is currently lowered (step S2: YES), the image processing unit 10 then performs the backlight correction processing by the backlight correction unit 11 at that time. Data is acquired (step S3). Next, the image processing unit 10 passes the sun visor 1 from the acquired image data based on the line-of-sight vector detected by the viewpoint position detection unit 12 using the viewpoint position data and the viewpoint position of the driver D. An image corresponding to a region on the line-of-sight vector (that is, a region outside the vehicle currently in the blind spot) is cut out by, for example, a method similar to the conventional method (step S4). At this time, the image processing unit 10 cuts out an image having a necessary size according to the size of the projection surface F on the indoor side of the sun visor 1. Next, the image processing unit 10 performs so-called trapezoidal correction processing on the cut-out image based on the angle data (step S5). In step S5, the image processing unit 10 determines that the driver D has the projection plane based on the angle with respect to the driver D of the sun visor 1 indicated by the angle data (in other words, “oblique condition” with respect to the driver D of the sun visor 1). The extracted image is trapezoidally corrected so that the projected image on F can be visually recognized as if it is transmitted through the sun visor 1.

  Thereafter, the image processing unit 10 outputs projection image data corresponding to the trapezoidally corrected image to the projector 3. Thereby, the projector 3 emits the projection light L corresponding to the projection image data toward the projection plane F of the sun visor 1 that has been lowered at that time (see step S2: YES). An image Z corresponding to the data is displayed on the projection plane F (step S6, see FIG. 2).

  Thereafter, the image processing unit 10 determines whether or not to end the projection processing according to the embodiment, for example, when the vehicle stops and the ACC switch is turned off (step S7). If it is determined in step S7 that the projection processing according to the embodiment is not terminated (step S7: NO), the image processing unit 10 returns to step S1 and repeats the projection processing described above. On the other hand, when the projection processing according to the embodiment is ended in the determination in step S7 (step S7: YES), the image processing unit 10 ends the projection processing as it is.

  As described above, according to the projection processing according to the embodiment, the state of the sun visor 1 on which the image Z obtained by correcting the image data obtained by photographing the area that becomes the blind spot outside the vehicle C is projected is detected. Based on this state, the image data is corrected and projected on the sun visor 1. Therefore, since the image Z corrected based on the state of the sun visor 1 on which the image Z is projected is optically projected onto the sun visor 1 by the projector 3, the original function (for example, mirror or card) as the sun visor 1 itself is projected. The driver D can make the driver D visually recognize a region that cannot be actually visually recognized by the sun visor 1 without impairing the function of attaching the holder or the like.

  Further, a sun visor 1 as a shield is provided so as to be rotatable about a rotation shaft 1a in a direction intersecting with the direction of the line of sight of the driver D, and the sun visor 1 in relation to the driver D can be rotated. A trapezoidal correction process based on angle data indicating an angle is applied to the image data from the camera 2. Therefore, by performing the trapezoidal correction process based on the angle of the sun visor 1, the driver D can make the driver D clearly visible in an area that is not actually visible.

  Furthermore, since the trapezoidal correction process is performed based on the angle data and the viewpoint position data, it is possible for the driver D to visually recognize a region that cannot actually be visually recognized.

  Furthermore, since the backlight correction process is performed on the image data obtained by the camera 2, even if it is necessary to block the sunlight using the sun visor 1, areas where the sun visor 1 does not actually recognize the sunlight can be detected. The influence can be reduced and the driver D can be clearly seen.

(II) Modified Embodiment Next, a modified embodiment according to the present invention will be described with reference to FIGS. FIG. 5 is a side view showing a configuration of a part of the projection apparatus according to the first modification, FIG. 6 is an external view showing the configuration of the projection apparatus according to the second modification, and FIG. It is a side view external view which shows the structure of the projection apparatus which concerns on a deformation | transformation form. Here, the configuration of the projection apparatus according to each of the following modifications is basically the same as the configuration of the projection apparatus S according to the embodiment. Therefore, in the following description, the member number of the projection apparatus S according to the embodiment The configuration and operation according to each modified embodiment will be described with reference to.

(I) First Modification As a first modification , the projection apparatus S according to the embodiment described above directly projects the image Z on the projection surface F on the indoor side of the sun visor 1. As shown in FIG. 5, the sun visor 1 is provided on the sun visor 1 so that the screen 20 dedicated to the projection of the image Z can be rotated indoors with respect to the driver D, and the image Z from the projector 3 is projected onto the screen 20. You may comprise. In this case, the angle sensor 5 detects the rotation angle of the screen 20 and outputs the angle data to the image processing unit 10. According to the configuration according to the first modification, the screen 20 on which the image Z is projected is provided in the sun visor 1, the angle in relation to the driver D of the screen 20 is detected, and the image Z is displayed on the screen 20. Projected on. Therefore, by using the dedicated screen 20, it is possible to make the driver D visually recognize the area that becomes a blind spot more clearly.

(Ii) Second Modification As a second modification, in the above-described embodiment, the projector 3 for projection is provided on the ceiling CL of the vehicle C. In addition, the projector itself is provided in the sun visor 1. You may let them.

  That is, FIG. 6A shows a front view at the time of projection (front view seen from the driver D side), and FIG. 6B shows a side view at the time of projection, as shown in FIG. A projector 25 having a single focal lens 26 is provided beside F, and projection light L is irradiated from the projector 25 as illustrated in FIGS. 6A and 6B to display an image Z. It can be configured to display on the projection plane F. In the configuration of the second modification, the position of the lens 26 of the projector 25 and the position of the projection plane F relative thereto are always in a constant relationship when the image Z is projected, so the image Z is projected more clearly. It can be projected onto the surface F.

  Further, when not in use, the projector 25 illustrated in FIG. 6 is configured to be folded with the lens 26 inside by a hinge 27, as illustrated in FIG. 6C and FIG. 6D. Is preferred. The hinge 27 in this case corresponds to an example of the “storage means” according to the present invention. With such a structure, even when the sun visor 1 is raised and stored, the projector 25 does not become an obstacle. Note that other configurations of the projection apparatus according to the second modification (for example, the position of the angle sensor 5 and the like) may be basically the same as those of the projection apparatus S according to the embodiment.

  According to the configuration according to the second modification, the projector 25 is provided in the sun visor 1, and the projector 25 is also stored by the hinge 27 as the sun visor 1 is stored. Therefore, the sun visor 1 and the projector 25 are integrated. By doing so, the area | region used as a blind spot can be made to be visually recognized for the driver | operator D more clearly.

(Iii) Third Modification Next, a third modification will be described. The third modification described below is a modification related to the determination of whether or not the sun visor 1 is lowered (see step S2 in FIG. 4).

  That is, as described above, whether or not the sun visor 1 is lowered is also a determination as to whether or not the image Z is actually projected on the projection plane F in the projection processing according to the embodiment. Therefore, as a determination as to whether or not the sun visor 1 has been lowered, for example, as shown in FIG. 7A, a range of the angle of the sun visor 1 that causes the driver D to feel a blind spot is set in advance, and the angle range is exceeded. If the sun visor 1 is lowered (see step S2 in FIG. 4: YES), the process may proceed to step S3 in FIG. In this case, if, for example, the angle range β shown in FIG. 7A is preset as the angle range of the sun visor 1 that makes the blind spot feel, the sun visor 1 is lowered to an angle within the angle range β. It is preferable that the image Z is projected (started) according to the angle at that time (see step S2: YES in FIG. 4). On the other hand, when the sun visor 1 is lowered only at an angle within the angle range α that does not reach the angle range β (see step S2 in FIG. 4: NO), the image Z is not projected (not started). It is preferable to configure as described above. At this time, the specific values of the angle range α and the angle range β may be set in advance, for example, empirically or experimentally, or may be configured or changed by the driver D.

  Further, the eye position (vertical height) is detected together with the viewpoint position of the driver D by the viewpoint position sensor 4 and the viewpoint position detection unit 12 in the projection device S according to the embodiment, and based on the height. Thus, the determination in step S2 in FIG. 4 can be performed. In this case, for example, due to the sitting height and height, the eyes of the driver D1 having the visual field EA1 illustrated in FIG. 7B and the eyes of the driver D2 having the visual field EA2 illustrated in FIG. When the eye height differs, the eye position sensor 4 and the eye position detection unit 12 detect the eye height. In the case of the eye height of the driver D1 illustrated in FIG. 7B, a blind spot is generated by the sun visor 1 having the angle γ (see step S2 in FIG. 4: YES). It is preferable that the image Z is projected (started) according to the angle γ. On the other hand, even if the angle γ of the same sun visor 1 is the height of the eyes of the driver D2 illustrated in FIG. 7C, the sun visor 1 does not generate a blind area (FIG. 7). 4 Step S2: Refer to NO), and it is preferable that the image Z is not projected (not started). In the case illustrated in FIG. 7B and FIG. 7C, generally, the driver D whose seat height or height is lower increases the angle of the sun visor 1 that does not project the image Z.

(Iv) Other Modifications As another modification, not only the driver's line of sight but also, for example, when the passenger's field of view sitting in the passenger seat is obstructed by the sun visor in front of it, the passenger can be seen through the sun visor. The present invention can also be applied to a case where a supposed image is projected inside the sun visor.

  Further, the vehicle driven by the driver D may be, for example, a two-wheeled vehicle with a hood in addition to the vehicle C according to the embodiment or each modification.

  Further, a program corresponding to the flowchart shown in FIG. 4 is recorded on a recording medium such as an optical disk or a hard disk, or acquired and recorded via a network such as the Internet, and the program is recorded on, for example, a general-purpose micro computer. By reading and executing with a computer or the like, the microcomputer or the like can be caused to function as the image processing unit 10 according to the embodiment and each modification.

  As described above, the present invention can be used in the field of projection devices, and in particular, the field of projection devices that can visually recognize what is in a blind spot as viewed from a person such as a driver. When applied to, particularly remarkable effects can be obtained.

DESCRIPTION OF SYMBOLS 1 Sun visor 1a Rotating shaft 1b Bearing part 2 Camera 3, 25 Projector 4 Viewpoint position sensor 5 Angle sensor 10 Image processing part 11 Backlight correction part 12 Viewpoint position detection part 20 Screen 26 Lens 27 Hinge S Projector BM Rearview mirror G Front window C Vehicle P Pillar F Projection plane Z Image CL Ceiling PL Column D, D1, D2 Driver α, β Angle range EA1, EA2 Field of view γ Angle

Claims (9)

Photographing obtained by photographing a blind spot area outside the vehicle, which is a blind spot of the passenger, by a movable shield provided inside the vehicle, which blocks the field of view of the passenger facing outside the vehicle. Detecting means for detecting a state in relation to the occupant of the shielding object on which the projection image corresponding to the corrected photographing information obtained by correcting the information is projected;
Correction means for correcting the shooting information to generate the corrected shooting information based on the state information indicating the detected state;
Projection control means for projecting the projection image corresponding to the generated corrected photographing information onto the shield using a projection means;
A projection apparatus comprising: The projection device according to claim 1,
The shield is provided in the vehicle so as to be rotatable about an axis in a direction intersecting with the direction of the line of sight of the occupant facing the blind spot area,
The detecting means detects the rotation angle of the shield in the relationship with the passenger as the state;
The projection device according to claim 1, wherein the correction means generates the corrected shooting information by performing a keystone correction process on the shooting information based on the state information indicating the detected angle. The projection device according to claim 1 or 2,
Further comprising position detecting means for detecting the viewpoint position of the passenger,
The projection apparatus, wherein the correction unit corrects the shooting information based on the state information and viewpoint position information indicating the detected viewpoint position to generate the corrected shooting information. In the projection device according to any one of claims 1 to 3,
The shield is a sun visor provided in the vehicle;
A projection apparatus, further comprising a backlight correction unit that performs backlight correction processing on the photographing information and outputs the processed information to the correction unit. In the projection device according to any one of claims 1 to 4,
A screen provided on the shield and onto which the projection image is projected;
The detecting means detects the state of the screen in relation to the passenger;
The projection control unit projects the projection image corresponding to the generated corrected photographing information onto a projection surface of the screen. In the projection device according to any one of claims 1 to 5,
The projection means is provided in the shield;
A projection apparatus comprising storage means for storing the projection means as the shielding object is stored. In a movable shield that shields a passenger's field of view toward the outside of the vehicle and is provided in the vehicle,
A projection surface on which a projection image corresponding to photographing information obtained by photographing a blind spot area outside the vehicle, which is a blind spot of the occupant by the shield, is photographed by the photographing unit;
The said projection image is the said projection image corresponded to the correction | amendment imaging | photography information which corrected the said imaging | photography information based on the state of the said shielding object in the relationship with the said passenger. In a projection method performed in a vehicle,
Photographing obtained by photographing a blind spot area outside the vehicle, which is a blind spot of the passenger, by a movable shield provided inside the vehicle, which blocks the field of view of the passenger facing outside the vehicle. A detection step of detecting a state in relation to the occupant of the shielding object on which the projection image corresponding to the corrected photographing information obtained by correcting the information is projected;
A correction step of correcting the shooting information to generate the corrected shooting information based on the state information indicating the detected state;
A projection control step of projecting the projection image corresponding to the generated corrected photographing information onto the shielding object using a projection unit;
A projection method comprising: The computer installed in the vehicle
Obtained by photographing a blind spot area outside the vehicle, which is a blind spot of the passenger, with a movable shield provided inside the vehicle, which blocks the field of view of the passenger facing the outside of the vehicle. Detecting means for detecting a state of the shielding object on which the projection image corresponding to the corrected photographing information obtained by correcting the photographing information is projected in relation to the passenger;
Based on state information indicating the detected state, correction means for correcting the shooting information and generating the corrected shooting information; and
Projection control means for projecting the projection image corresponding to the generated corrected photographing information onto the shielding object using a projection means;
Projecting program characterized by functioning as

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