Imaging apparatus, information processing apparatus, information processing method, and program
There is provided an imaging apparatus, an information processing apparatus, an information processing method, and a program that are intended to suppress an increase in a load. A captured image is linked with a hash value for a part of the captured image and part identification information for identifying the part. Further, the part of the captured image is extracted from the captured image in reference to the part identification information for identifying the part, the part identification information being linked with the captured image along with the hash value for the part and the part identification information, a hash value for the part extracted and the part identification information is generated, and the hash value generated is compared with the hash value linked with the captured image. The present disclosure can be applied to, for example, an image processing apparatus, an information processing apparatus, an imaging apparatus, electronic equipment, an information processing method, a program, or the like.
1 . An imaging apparatus comprising:
circuitry configured to
link a captured image with a hash value for a part of the captured image and part identification information for identifying the part, the captured image being a moving image,
select only frames of the moving image in which movement is higher than movement of a preceding frame of the moving image by a predetermined threshold,
link, for only the selected frames, the captured image with the hash value for the part of the captured image and the part identification information,
generate an electronic signature by using a private key to encrypt the hash value, and
link the captured image with the electronic signature.
2 . The imaging apparatus according to claim 1 , wherein
the part is a focused part of the captured image.
3 . The imaging apparatus according to claim 1 , wherein
the part is a partial region at a predetermined position in the captured image.
4 . The imaging apparatus according to claim 1 , wherein
the part is a part resulting from decimation of some pixels from the captured image.
5 . The imaging apparatus according to claim 1 , wherein
the part is identified according to a result of image analysis of the captured image.
6 . The imaging apparatus according to claim 1 , wherein
the circuitry is further configured to extract the part from the captured image.
7 . The imaging apparatus according to claim 6 , wherein
the circuitry is further configured to extract a focused part of the captured image in reference to focus information.
8 . The imaging apparatus according to claim 6 , wherein
the circuitry is further configured to extract the part from the captured image according to a result of image analysis of the captured image.
9 . The imaging apparatus according to claim 1 , wherein
the circuitry is further configured to generate the hash value by using the part of the captured image and the part identification information, and link the captured image with the hash value.
10 . The imaging apparatus according to claim 1 , wherein
the circuitry is further configured to
update metadata of the captured image by using the part identification information, and
apply, to the captured image, the metadata, to link the metadata with the captured image.
11 . The imaging apparatus according to claim 1 , wherein
the circuitry is further configured to link the captured image with a public key used to generate an electronic signature and a certificate for the public key.
12 . The imaging apparatus according to claim 1 , wherein
the circuitry is further configured to link, only for an I frame of the moving image, the captured image with the hash value for the part of the captured image and the part identification information.
13 . The imaging apparatus according to claim 1 , wherein,
in a continuous shooting mode, the circuitry is further configured to link the captured image with the hash value for the part of the captured image and the part identification information, and,
in a mode other than the continuous shooting mode, the circuitry is further configured to link the captured image with a hash value for the entire captured image.
14 . An information processing method comprising:
linking a captured image with a hash value for a part of the captured image and part identification information for identifying the part, the captured image being a moving image;
generating an electronic signature by using a private key to encrypt the hash value; and
linking the captured image with the electronic signature, wherein
the linking of the captured image includes selecting only frames of the moving image in which movement is higher than movement of a preceding frame of the moving image by a predetermined threshold, and linking, for only the selected frames, the captured image with the hash value for the part of the captured image and the part identification information.
15 . A non-transitory computer-readable medium having embodied thereon a program, which when executed by a computer causes the computer to execute an information processing method, the method comprising:
linking a captured image with a hash value for a part of the captured image and part identification information for identifying the part, the captured image being a moving image;
generating an electronic signature by using a private key to encrypt the hash value; and
linking the captured image with the electronic signature, wherein
the linking of the captured image includes selecting only frames of the moving image in which movement is higher than movement of a preceding frame of the moving image by a predetermined threshold, and linking, for only the selected frames, the captured image with the hash value for the part of the captured image and the part identification information.