TWI683172B - Camera system for car interior - Google Patents

Abstract

Present invention is related to a camera system for car interior having a camera device being mounted on a machine arm. The camera device comprises at least two focusing lens with different focal distance. A light source is configured to mount with each focusing lens. When the present invention is utilized for filming at least two recognition sites of a car interior, the machine arm will be executed to reach inside the car for the camera device filming the at least two recognition sites. By choosing appropriated focal distance of the camera device, the machine arm of the present invention is able to reduce its movement or action. The focusing lens requires no focusing while filming. The present invention is able to accelerate and provide an efficiency way of image recognition for the car interior.

Description

Automotive interior camera system

The invention relates to a photographic structure, and in particular to an automobile interior photographic system matched with a visual detection system.

The imaging device used in the existing visual inspection system is a zoom lens, so when capturing images for image recognition, it is necessary to move the imaging device to an appropriate shooting position with a mechanical arm, such as a position where the zoom lens can focus, and then use the zoom lens to image The recognition office takes photos for subsequent image recognition operations.

Although the photography device of the aforementioned visual inspection system can take pictures to provide image recognition, but the focusing procedure of the focusing lens takes a long time, so when shooting more than one image recognition place, in addition to the mechanical arm moving the photography device to a different shooting position In addition to the time it takes, the photographing device needs to be refocused after moving to each shooting position to take a photo, making the process of taking a photo more time-consuming.

Since the photography device of the existing visual inspection system uses a zoom lens, it is necessary to focus before shooting an image, so photography is time-consuming. To this end, the present invention is provided with more than two fixed focal length lenses with different focal lengths in the photographing device. By selecting a fixed focal length lens with an appropriate focal length for photography, in addition to not needing to focus, it can also reduce the amplitude of the movement of the mechanical arm, which can improve the image recognition of captured images speed.

In order to achieve the above-mentioned creative objective, the present invention provides a car interior camera system for shooting more than two image recognition locations in a car. The system includes a multi-axis robotic arm, a camera device, and a controller. The shaft mechanical arm is provided with a base, a mechanical arm is coupled to the base, and a mechanical wrist is coupled to the end of the mechanical arm; the photographing device is provided with a camera body, which is coupled to the end of the mechanical wrist, at the camera The main body is provided with more than two fixed focus lenses. The focal lengths of the two or more fixed focus lenses are different. According to the shooting direction of each fixed focus lens, an illumination light source is provided on the camera body; the controller and the multi-axis machine are respectively The arm is electrically connected to the camera device, the controller controls the multi-axis mechanical arm to extend the camera device into the car, and the two or more fixed-focus lenses of the camera device are respectively used to shoot more than two image recognition locations. The position of each image recognition position falls within the depth of field of the fixed focus lens where the image is taken.

Further, when the controller of the present invention controls the multi-axis mechanical arm to extend the camera device into the car, the camera device is extended to a fixed point in the car, and then the mechanical wrist is driven to rotate so that the camera device Shooting each of the image recognition points in different directions at fixed points.

Further, in the present invention, the two or more fixed-focus lenses are provided in front of the camera body, and the illumination light source is a ring-shaped light source surrounding the two or more fixed-focus lenses. The shooting direction of the fixed focus lens is from the same direction to an angle within plus or minus 5 degrees.

Furthermore, the illumination light source of the present invention includes a plurality of LED bulbs, which are combined with the camera body and surround the two or more fixed-focus lenses.

Preferably, the present invention further provides a database in which more than two execution files are stored in the database corresponding to different car models. Each execution file includes a path code and a program code, and the path code causes the controller to control the A multi-axis mechanical arm extends the camera into the car for shooting. The code specifies which fixed focal length lens of the camera is used to shoot the image recognition location. The controller It is connected to the database signal and loads the corresponding execution file according to the car model to control the robot arm and the camera.

When the invention is used, the controller controls the multi-axis robotic arm to extend the camera device into the car according to the positions of more than two image recognition locations known in the car. The focal lens separately shoots more than two image recognition locations, and the images taken at each image recognition location provide a subsequent image recognition procedure.

The effect of the present invention is that the photographing device has more than two fixed-focus lenses, and the focal lengths of the fixed-focus lenses are different. Therefore, when the multi-axis mechanical arm extends the photographing device into the car to shoot images, in addition to being able to shoot images directly There is no need to focus, so in addition to speeding up the process of shooting images, you can also use the different focal lengths of each fixed-focus lens to choose a fixed-focus lens with an appropriate focal length to reduce the range of movement of the camera device driven by the multi-axis mechanical arm in the car and adapt to the car. The narrow space inside and speed up the process of shooting images.

10‧‧‧Car

11‧‧‧Image Recognition Office

20‧‧‧Multi-axis robot arm

21‧‧‧Dock

22‧‧‧Robot

23‧‧‧Mechanical wrist

30‧‧‧Photographic device

31‧‧‧ camera body

32‧‧‧ Fixed focus lens

33‧‧‧Light source

331‧‧‧LED bulb

40‧‧‧Controller

50‧‧‧Database

51‧‧‧Execution file

52‧‧‧path code

53‧‧‧Code

A‧‧‧First fixed focus lens

B‧‧‧Second fixed focus lens

C‧‧‧The third fixed focus lens

FIG. 1 is a schematic diagram of the interior of an automobile according to a preferred embodiment of the present invention.

FIG. 2 is a schematic diagram of extending a photographing device into a car according to a preferred embodiment of the present invention.

3 is a schematic diagram of a photographing device according to a preferred embodiment of the present invention.

4 is a block diagram of a preferred embodiment of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and can be implemented in accordance with the content of the specification, the preferred embodiments shown in the drawings are further described in detail below.

Please refer to the preferred embodiment of the present invention shown in FIG. 1 to FIG. 4, which provides a car interior photography system. The car interior is provided with two or more images in a car 10 that need to be separately identified The recognition location 11, for example, the present preferred embodiment is the image recognition location 11 at the warning sticker and the cup holder in the car 10.

The camera system includes a multi-axis robot arm 20, a camera device 30 mounted on the multi-axis robot arm 20, a controller 40 electrically connected to the multi-axis robot arm 20 and the camera device 30, and a The data base 50 for signal connection of the controller 40, wherein: the multi-axis robot arm 20 is a robot arm with more than three axes. For example, a six-axis robot arm commonly used in the industry can be used. The multi-axis robot arm 20 is provided with a base 21 , The base 21 is provided at a fixed place, such as a structure suspended from a scaffold or a base mounted on the ground, and a mechanical arm 22 is combined with the base 21 in a rotatable manner along the Z axis. It has multiple joints, and a mechanical wrist 23 is combined with a movable joint at the end of the mechanical arm 22.

The photographing device 30 is provided with a camera body 31 which is coupled to the end of the mechanical wrist 23. The camera body 31 can change its direction with the rotation of the mechanical wrist 23. Two camera bodies 31 are provided For the above fixed-focus lens 32, for example, in this preferred embodiment, three fixed-focus lenses 32 are provided in front of the camera body 31, and the three fixed-focus lenses 32 are divided into a first fixed-focus lens A with different focal lengths. A second fixed focus lens B and a third fixed focus lens C, the preferred lens focal length configuration is to set the focal lengths of the first fixed focus lens A, the second fixed focus lens B, and the third fixed focus lens C to short and medium Three long focal lengths.

According to the shooting direction of each fixed focus lens 32, an illumination light source 33 is provided on the camera body 31. As in the preferred embodiment, the illumination light source 33 is a ring-shaped light source and includes a plurality of LED bulbs 331, which are combined in The camera body 31 surrounds the three fixed-focus lenses 32. The direction of illumination of the plurality of LED bulbs 331 and the shooting direction of each fixed-focus lens 32 are the same direction to an angle within plus or minus 5 degrees. The LED bulbs 331 emitting light on opposite sides of the fixed focus lens 32 are used for illumination, which can eliminate the shadow of each image recognition place 11 captured by each fixed focus lens 32 and obtain a better shooting effect.

The controller 40 is used to control the multi-axis robotic arm 20 and the camera device 30. The controller 40 controls the multi-axis robotic arm 20 to extend the camera device 30 into a fixed point in the car, and then rotate the mechanical wrist at the fixed point 23. The photographing device 30 is respectively directed toward the two image recognition locations 11 to shoot images that can provide subsequent image recognition. If there is insufficient light during the shooting process, the illumination light source 33 is used to supplement the light. When shooting the two image recognition locations 11 of the warning sticker and the cup holder, two of the three fixed focus lenses 32 are selected, for example, the first fixed focus lens A and the second fixed focus lens B are respectively taken for the two image recognition locations 11 At the time of shooting, the position of each image recognition position 11 falls within the depth of field range of the fixed focus lens 32 at the shooting position.

The selection condition of the aforementioned camera device 30 reaching the fixed point in the car 10 is that the camera device 30 can shoot clear images with the corresponding fixed focus lenses 32 when shooting the image recognition locations 11 at the location changing direction position. That is, the distance between the fixed point and the two image recognition locations 11 needs to fall within the depth of field range of the focal length of the first fixed-focus lens A and the focal length of the second fixed-focus lens B, so that the multi-axis robotic arm 20 Only the mechanical wrist 23 can be moved to shoot a clear image, and it is also possible to adapt to the narrow space in the automobile 10 when the camera device 30 is moved, so that the space of the mechanical arm 22 cannot be moved significantly. In this way, in addition to saving the time required for each fixed-focus lens 32 to focus on the image, it can further reduce the movement time of the multi-axis robot 20 to move the photographing device 30 to shoot, and speed up the subsequent image recognition process.

The data base 50 can be installed inside the controller 40, or the data base 50 can be installed in an external personal computer and then connected to the information of the controller 40, because the position of the image recognition inside the car 10 of different models is different The controller 40 controls the multi-axis robotic arm 20 to move the photographing device 30 to take different positions. To this end, corresponding to the number and location of the image recognition locations 11 of different car models, more than two execution files 51 are stored in the database 50, and each execution file 51 includes a path code 52 and a program code 53, the path code 52 When loaded into the controller 40, the controller 40 can control the multi-axis robot 20 to extend the camera device 30 into an appropriate position in the car 10, such as the aforementioned fixed point for shooting; the code 53 specifies the shooting of each image At 11 o'clock, the fixed lens 32 of the camera 30 is used to shoot Photo. Before the camera system of the present invention shoots the image of the interior of the car, the controller 40 will load the database 50 into an appropriate execution file 51 for execution depending on the vehicle model, thereby controlling the multi-axis robot arm 20 and the Photography device 30.

The above are only preferred embodiments of the present invention and are not intended to limit the scope of the claimed rights of the present invention. Any other equivalent changes or modifications made without departing from the spirit of the present invention should be included in the present invention Within the scope of patent application.

10‧‧‧Car

20‧‧‧Multi-axis robot arm

21‧‧‧Dock

22‧‧‧Robot

23‧‧‧Mechanical wrist

30‧‧‧Photographic device

Claims (5)

A car interior photography system is used to shoot more than two image recognition locations in a car. The system includes a multi-axis mechanical arm, a photographing device and a controller, wherein: the multi-axis mechanical arm is provided with a base A mechanical arm is combined with the base, and a mechanical wrist is combined with the end of the mechanical arm; the photographing device is provided with a camera body, the camera body is combined with the end of the mechanical arm, and more than two fixed focus are provided with the camera body Lenses, the focal lengths of two or more fixed focus lenses are different, and with the shooting direction of each fixed focus lens, an illumination light source is provided on the camera body; the controller is electrically connected to the multi-axis mechanical arm and the photographing device, respectively, the The controller controls the multi-axis mechanical arm to extend the camera device into the car, and the two or more fixed-focus lenses of the camera device are used to shoot more than two image recognition points, and the position of each image recognition point falls in the shooting. The depth of field of the fixed-focus lens at that location. For example, in the car interior camera system of claim 1, wherein the controller controls the multi-axis robotic arm to extend the camera device into the car, the camera device is extended into the car at a fixed point, and then the machine is driven The wrist rotates so that the photographing device shoots each of the image recognition points in different directions at a fixed point. The automotive interior photography system according to claim 1, wherein the two or more fixed-focus lenses are provided in front of the camera body, and the illumination light source is a ring-shaped light source surrounding the two or more fixed-focus lenses, The direction of the illumination light source and the shooting direction of each fixed focus lens are the same direction to an angle within plus or minus 5 degrees. The automotive interior photography system according to claim 3, wherein the illumination light source includes a plurality of LED bulbs, the plurality of LED bulbs are combined with the camera body and surround the two or more fixed focus lenses. For example, the auto interior photography system of any one of claims 1 to 4, which is further provided with a database, which stores more than two execution files corresponding to different car models, each execution file includes a path code and a The program code, the path code causes the controller to control the multi-axis mechanical arm to extend the camera device into the car for shooting. The program code specifies which focal lens of the camera device is used for shooting The controller is in signal connection with the database and loads the corresponding execution file according to the car model to control the robot arm and the camera.

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