High resolution thin multi-aperture imaging systems
AssigneeCorephotonics Ltd.
InventorsGal Shabtay, Noy Cohen, Oded Gigushinski, Ephraim Goldenberg
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Abstract
A multi-aperture imaging system comprising a first camera with a first sensor that captures a first image and a second camera with a second sensor that captures a second image, the two cameras having either identical or different FOVs. The first sensor may have a standard color filter array (CFA) covering one sensor section and a non-standard color CFA covering another. The second sensor may have either Clear or standard CFA covered sections. Either image may be chosen to be a primary or an auxiliary image, based on a zoom factor. An output image with a point of view determined by the primary image is obtained by registering the auxiliary image to the primary image.
Claims16
A multi-aperture imaging system comprising:
- a) a first camera that provides a first camera image, the first camera having a first sensor with a first plurality of sensor pixels covered at least in part with a non-standard color filter array (CFA) used to increase a specific color sampling rate relative to a same color sampling rate in a standard CFA, wherein the non-standard CFA includes a repetition of a n×n micro-cell where n=4 and wherein each micro-cell includes a BBRR-RBBR-RRBB-BRRB color filter order;
- b) a second camera that provides a second camera image, the second camera having a second sensor with a second plurality of sensor pixels, the second plurality of sensor pixels being either Clear or covered with a standard CFA, wherein the second camera image has an overlap area with the first camera image;
- and
- c) a processor configured to process the first and second camera images into a fused output image, wherein in the overlap area pixels of the second camera image are registered with corresponding pixels of the first camera image.
A multi-aperture imaging system comprising:
- a) a first camera that provides a first camera image, the first camera having a first sensor with a first plurality of sensor pixels covered at least in part with a non-standard color filter array (CFA) used to increase a specific color sampling rate relative to a same color sampling rate in a standard CFA, wherein the non-standard CFA includes a repetition of a n×n micro-cell where n=6 and wherein each micro-cell includes a color filter order selected from the group consisting of RBBRRB-RWRBWB-BBRBRR-RRBRBB-BWBRWR-BRRBBR, BBGRRG-RGRBGB-GBRGRB-RRGBBG-BGBRGR-GRBGBR, RBBRRB-RGRBGB-BBRBRR-RRBRBB-BGBRGR-BRRBBR and RBRBRB-BGBRGR-RBRBRB-BRBRBR-RGRBGB-BRBRBR;
- b) a second camera that provides a second camera image, the second camera having a second sensor with a second plurality of sensor pixels, the second plurality of sensor pixels being either Clear or covered with a standard CFA, wherein the second camera image has an overlap area with the first camera image;
- and
- c) a processor configured to process the first and second camera images into a fused output image, wherein in the overlap area pixels of the second camera image are registered with corresponding pixels of the first camera image.
A method of acquiring images by a multi-aperture imaging system, the method comprising:
- a) providing a first image generated by a first camera of the imaging system, the first camera having a first field of view (FOV1);
- b) providing a second image generated by a second camera of the imaging system, the second camera having a second field of view (FOV2) such that FOV2<FOV1, the second image having an overlap area with the first image;
- and
- c) fusing the first and second images into a fused image, wherein the fusing includes applying a registration process between the first and second images, the registration process including:
- i. extracting a first Luma image from the first image
- ii. extracting a second Luma image from the second image,
- iii. applying low-pass filtering on the second Luma image in order to match its spatial frequency content to that of the first Luma image and to generate a low-pass second Luma image, and
- iv. applying registration on the low-pass second Luma image and the first Luma image,
- wherein the non-standard CFA includes a repetition of a n×n micro-cell where n=4 and
- wherein each micro-cell includes a BBRR-RBBR-RRBB-BRRB color filter order.
A color filter array (CFA) comprising:
- a first 2×2 color filter group having three blue color filters and a fourth color filter that is not a blue color filter.
A color filter array (CFA), comprising:
- a) a first 3×3 color filter group, having eight color filters and a first white filter;
- and
- b) a second 3×3 color filter group having eight color filters and a second white filter.
A color filter array (CFA) comprising:
- a) a first 3×3 color filter group having two adjacent red color filters;
- and
- b) a second 3×3 color filter group having two adjacent blue color filters.
Dependencies are inferred from the claim text.