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US 2025/0359727 A1Published application
Imaging apparatus and endoscopic system
AssigneeJVCKENWOOD Corporation
InventorsToshihide KOBAYASHI, Shogo MASUDA, Kazunori SHIODA
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AssigneeJVCKENWOOD Corporation
InventorsToshihide KOBAYASHI, Shogo MASUDA, Kazunori SHIODA
Estimating the term…
An imaging apparatus includes: a polarization image sensor for detecting four polarization components; an interpolation processing unit that calculates, pixel by pixel, an RGB value of each of the four polarization components from the polarization image sensor; a rank processing unit that ranks the four polarization components; a reference generation unit that calculates a reference brightness value; and a synthesis processing unit that a) outputs a reference RGB value when the reference brightness value matches a predetermined threshold value, b) outputs a composite RGB value obtained by synthesizing a high-rank RGB value and the reference RGB value when the reference brightness value is smaller than the threshold value, and c) outputs a composite RGB value obtained by synthesizing a low-rank RGB value and the reference RGB value when the reference brightness value is greater than the threshold value.
An imaging apparatus comprising:
Dependencies are inferred from the claim text.
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Characterised by electronic signal processing: of image signals during a use of endoscope
Instruments for performing medical examinations of the interior of cavities or tubes
Of image signals during a use of endoscope: for image enhancement
Optical arrangements: with imaging filters
Term end not estimated
The present disclosure relates to an imaging apparatus and an endoscopic system.
An imaging apparatus for observing the polarization state of a light from a subject is known. For example, a technology is proposed in which a plurality of color images with different polarization states are acquired in a time divided manner, a composite image is generated by using polarization information on the subject based on the plurality of color images, and the color is corrected based on a reference image selected from the plurality of color images. A technology to suppress overexposure or underexposure by using, as the reference image, an HDR (High Dynamic Range) image produced by synthesizing a plurality of color images at different exposure conditions has been proposed (see, for example, Patent Literature 1). [Patent Literature 1] JP 2017-191986 A
In the above-described technology, color images with different polarization states are acquired by using a variable phase difference plate so that coloring caused by the variable phase difference plate is produced.
Embodiments will now be described, by way of example only, with reference to the accompanying drawings which are meant to be exemplary, not limiting, and wherein like elements are numbered alike in several Figures, in which:
FIG. 1 schematically shows a configuration of an imaging apparatus according to the first embodiment;
FIG. 2 is a plan view schematically showing a configuration of the light detection layer of the polarization image sensor;
The invention will now be described by reference to the preferred embodiments. This does not intend to limit the scope of the present invention, but to exemplify the invention.
A description will be given below of embodiments of the present disclosure with reference to the drawings. Specific numerical values shown in the embodiments are by way of example only to facilitate the understanding of the invention and should not be construed as limiting the disclosure unless specifically indicated as such. Those elements in the drawings not directly relevant to the present disclosure are omitted from the illustration.
FIG. 1 schematically shows a configuration of an imaging apparatus 10 according to the first embodiment. The imaging apparatus 10 includes an imaging unit 12 and an image processing apparatus 14.