Imaging apparatus, imaging method, and program
The present technology relates to an imaging apparatus, an imaging method, and a program that perform appropriate exposure control, to thereby enable a desired object to be appropriately imaged. The present technology includes: an imaging unit including a plurality of pixels having different spectral characteristics; and an exposure control unit setting information associated with exposure control on the plurality of pixels depending on specification information for specifying a kind of a measurement target. Alternatively, the present technology includes: an imaging unit including a plurality of pixels having different spectral characteristics; and an exposure control unit setting information associated with exposure control on the plurality of pixels on the basis of a predicted output value of each of the plurality of pixels based on a spectral characteristic related to a measurement target. The present technology is applicable to an imaging apparatus which senses vegetation, for example.
1. An imaging apparatus comprising:
an imager including a plurality of pixels having different spectral characteristics; and
an exposure controller configured to set information associated with exposure control on the plurality of pixels depending on specification information for specifying a kind of a measurement target, and calculate a predicted value that is a predicted output from each of the pixels, and use the predicted value to determine the set information.
2. The imaging apparatus according to claim 1 ,
wherein the exposure controller controls the imager on a basis of the set information.
3. The imaging apparatus according to claim 1 ,
wherein the set information includes exposure time or sensitivity of the plurality of pixels.
4. The imaging apparatus according to claim 1 ,
wherein the imager includes a stop, and
the set information includes an opening amount of the stop.
5. The imaging apparatus according to claim 1 ,
wherein the kind of the measurement target is specified by a user.
6. The imaging apparatus according to claim 1 , further comprising:
a memory storing the information depending on the specification information,
wherein the exposure controller reads out the information from the memory.
7. The imaging apparatus according to claim 1 ,
wherein the exposure controller uses a spectral characteristic of the measurement target, a spectral characteristic of each of the pixels, and a spectral characteristic of a light source to calculate the predicted value that is the predicted output from each of the pixels.
8. The imaging apparatus according to claim 7 ,
wherein the spectral characteristic of the light source includes a value measured by an illuminance value sensor.
9. The imaging apparatus according to claim 7 ,
wherein the set information is set to a value that prevents overexposure of one of the pixels that has a highest predicted value.
10. An imaging method comprising:
setting, by an imaging apparatus which performs imaging by an imager including a plurality of pixels having different spectral characteristics, information associated with exposure control on the plurality of pixels depending on specification information for specifying a kind of a measurement target, and calculating a predicted value that is predicted output from each of the pixels, and using the predicted value to determine the set information.
11. A non-transitory computer-readable medium storing a program for causing a computer which controls an imaging apparatus including an imaging unit including a plurality of pixels having different spectral characteristics to execute processes including a step of:
setting information associated with exposure control on the plurality of pixels depending on specification information for specifying a kind of a measurement target, and calculating a predicted value that is predicted output from each of the pixels, and using the predicted value to determine the set information.
12. An imaging apparatus comprising:
an imager including a plurality of pixels having different spectral characteristics; and
an exposure controller configured to set information associated with exposure control on the plurality of pixels on a basis of a predicted output value of each of the plurality of pixels based on a spectral characteristic related to a measurement target.
13. The imaging apparatus according to claim 12 ,
wherein the exposure controller controls the imager on a basis of the information set.
14. The imaging apparatus according to claim 12 ,
wherein the set information includes exposure time or sensitivity of the plurality of pixels.
15. The imaging apparatus according to claim 12 ,
wherein the imager includes a stop, and
the set information includes an opening amount of the stop.
16. The imaging apparatus according to claim 12 ,
wherein the measurement target is set by a user.
17. The imaging apparatus according to claim 12 , further comprising:
a memory storing the information depending on the measurement target,
wherein the exposure controller reads out the information from the storage unit.
18. The imaging apparatus according to claim 12 ,
wherein the exposure controller calculates the predicted output value by using a spectral characteristic of the measurement target, a spectral characteristic of each of the pixels, and a spectral characteristic of a light source, and uses the predicted output value to set the information.
19. The imaging apparatus according to claim 18 ,
wherein the spectral characteristic of the light source includes a value measured by an illuminance value sensor.
20. The imaging apparatus according to claim 12 ,
wherein the set information is set to a value that prevents overexposure of one of the pixels that has a highest predicted output value.