Imaging device, imaging device image output method, and computer program
First Claim
1. An image pickup apparatus characterized by comprising:
- an image pickup device for picking up an image of a subject;
a signal processing section for generating a composite image having a relatively wider dynamic range than at least either the dynamic ranges of a long-time exposure image picked up with a relatively long exposure time by said image pickup device or a short-time exposure image picked up with a relatively short exposure time by said image pickup device, by synthesizing said long-time exposure image and said short-time exposure image; and
a control section for compressing said composite image and dynamically varying the assignment proportion of a high luminance dynamic range to a low-middle luminance dynamic range in a dynamic range of an output image to be outputted as a video signal.
1 Assignment
0 Petitions
Accused Products
Abstract
An image pickup apparatus capable of performing dynamic assignment of an output image in a dynamic range according to a subject.
The image pickup apparatus includes an image pickup device (131) for picking up an image of a subject, a signal processing section (133) for generating a composite image having a relatively wider dynamic range than at least either of the dynamic ranges of a long-time exposure image picked up with a relatively long exposure time by the image pickup device and a short-time exposure image picked up with a relatively short exposure time by the image pickup device, by synthesizing the long-time exposure image and the short-time exposure image, and a control section (137) for compressing the composite image and dynamically varies the assignment proportion of a high luminance dynamic range to a low-middle luminance dynamic range in a dynamic range of an output image to be outputted as a video signal.
88 Citations
38 Claims
-
1. An image pickup apparatus characterized by comprising:
-
an image pickup device for picking up an image of a subject;
a signal processing section for generating a composite image having a relatively wider dynamic range than at least either the dynamic ranges of a long-time exposure image picked up with a relatively long exposure time by said image pickup device or a short-time exposure image picked up with a relatively short exposure time by said image pickup device, by synthesizing said long-time exposure image and said short-time exposure image; and
a control section for compressing said composite image and dynamically varying the assignment proportion of a high luminance dynamic range to a low-middle luminance dynamic range in a dynamic range of an output image to be outputted as a video signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An image pickup apparatus characterized by comprising:
-
an image pickup device for picking up an image of a subject;
a signal processing section for generating a composite image having a relatively wider dynamic range than the dynamic range of at least either a long-time exposure image picked up with a relatively long exposure time by said image pickup device or a short-time exposure image picked up with a relatively short exposure time by said image pickup device, by synthesizing said long-time exposure image and said short-time exposure image; and
a control section for compressing said composite image and dynamically assigning the dynamic range of said composite image to the dynamic range of an output image to be outputted as a video signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. An image pickup apparatus characterized by comprising:
-
an image pickup device for picking up an image of a subject;
a detection section for detecting an image signal of a long-time exposure image picked up with a relatively long exposure time by said image pickup device, and an image signal of a short-time exposure image picked up with a relatively short exposure time by said image pickup device;
a synthesis section for generating a composite image from said long-time exposure image and said short-time exposure image on the basis of a switch luminance signal level determined from said image signals;
a control section for compressing said composite image according to a luminance region which occupies said composite image, and dynamically assigning the dynamic range of an output image to be outputted as a video signal; and
a compression section for compressing the dynamic range of said composite image on the basis of dynamic assignment of said dynamic range of said output image. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
-
-
33. An image pickup apparatus characterized by comprising:
-
an image pickup device for picking up an image of a subject;
a detection section for detecting an image signal of a long-time exposure image picked up with a relatively long exposure time by said image pickup device, and an image signal of a short-time exposure image picked up with a relatively short exposure time by said image pickup device;
a synthesis section for excluding said luminance signal level from a target to be synthesized, when at least said image signal corresponding to a luminance signal level of either said long-time exposure image or said short-time exposure image is absent, and synthesizing said long-time exposure image and said short-time exposure image on the basis of said switch luminance signal level;
a control section which dynamically assigns the dynamic range of an output image to be outputted as a video signal in which a composite image is compressed, according to a luminance region which occupies said composite image in which said long-time exposure image and said short-time exposure image are synthesized; and
a compression section for compressing the dynamic range of said composite image on the basis of dynamic assignment of said dynamic range of said output image. - View Dependent Claims (34, 35, 36, 37, 38)
-
Specification