Imaging apparatus, imaging system, and display system
An imaging apparatus is attached to a side of a moving body (for example, vehicle). The imaging apparatus includes an image sensor and an optical system that forms a subject image in a range of a predetermined vertical view angle and a predetermined horizontal view angle on an imaging surface. The optical system forms an image on the imaging surface so as to cause resolution in first region (R 1 ) of the imaging surface to be higher than resolution in second region (R 2 ) different from the first region. A position of center (G 1 ) of first region (R 1 ) is at least one of a position horizontally shifted from a center of the horizontal view angle and a position vertically shifted from a center of the vertical view angle.
1. An imaging system comprising a first imaging apparatus and a second imaging apparatus attached on left and right sides of a moving body, respectively, the first imaging apparatus and the second imaging apparatus each including:
an image sensor that includes an imaging surface having a plurality of pixels arranged two-dimensionally and that generates image data from a subject image formed on the imaging surface; and
an optical system that forms the subject image included in a range of a predetermined vertical view angle and a predetermined horizontal view angle on the imaging surface,
wherein
a number of pixels for capturing the subject image included in a unit view angle is defined as resolution,
the imaging surface includes a first region for capturing a first subject image of the subject image and a second region for capturing a second subject image of the subject image different from the first region,
the optical system forms the subject image on the imaging surface so as to cause resolution of the first region to be higher than resolution of the second region, and
a position of a center of the first region is a position horizontally shifted from a center of the predetermined horizontal view angle, and
wherein:
the position of the center of the first region in the imaging surface of the first imaging apparatus is horizontally shifted from the center of the predetermined horizontal view angle, in a direction opposite to that which the position of the center of the first region in the imaging surface of the second imaging apparatus is horizontally shifted from the center of the predetermined horizontal view angle, and
resolution characteristics of the optical systems of the first imaging apparatus and the second imaging apparatus are the same in the vertical direction.
2. The imaging system according to claim 1 , wherein a number of peaks of the resolution in each of the predetermined horizontal view angle and the predetermined vertical view angle is one.
3. The imaging system according to claim 1 wherein each optical system includes a free-form lens.
4. The imaging system according to claim 1 , wherein the position of the center of the respective first regions is disposed at the position horizontally shifted from the center of the horizontal view angle toward a region for forming an image of a part of the moving body.
5. The imaging system according to claim 1 , wherein the first imaging apparatus and the second imaging apparatus capture respective images of the side and an oblique rear side of the moving body.
6. The imaging system according to claim 1 , wherein the moving body is one of an automobile, a railway, a vessel, an airplane, a robot, a robot arm, a drone, an agricultural machine, and a construction machine.
7. The imaging system according to claim 1 , further comprising:
a display device that displays an image based on the image data generated by the first imaging apparatus and the second imaging apparatus.
8. The imaging system according to claim 1 , further comprising:
a control device that analyzes image data generated by the imaging apparatus.
9. An imaging system including at least one of a first imaging apparatus attached to a right side of a moving body, and a second imaging apparatus attached to a left side of the moving body, each of the first and second imaging apparatuses comprising:
an image sensor that includes an imaging surface having a plurality of pixels arranged two-dimensionally and that generates image data from a subject image formed on the imaging surface; and
an optical system that forms the subject image included in a range of a predetermined vertical view angle and a predetermined horizontal view angle on the imaging surface,
wherein
a number of pixels for capturing the subject image included in a unit view angle is defined as resolution,
the imaging surface includes a first region for capturing a first subject image of the subject image and a second region for capturing a second subject image of the subject image different from the first region,
the optical system forms the subject image on the imaging surface so as to cause resolution of the first region to be higher than resolution of the second region, and
a position of a center of the first region is a position horizontally shifted from a center of the predetermined horizontal view angle, and
in a case of the first imaging apparatus, a position of a center of the first region in the imaging surface of the first imaging apparatus is horizontally shifted from a center of the predetermined horizontal view angle,
in a case of the second imaging apparatus, a position of a center of the first region in the imaging surface of the second imaging apparatus is horizontally shifted from a center of the predetermined horizontal view angle in a direction opposite to that which the position of a center of the first region in the imaging surface of the first imaging apparatus is horizontally shifted, and
wherein the resolution characteristics of the optical system of the first imaging apparatus and the second imaging apparatus are the same in the vertical direction.