公开(公告)号：US09615038B2

公开(公告)日：2017-04-04

申请号：US14995557

申请日：2016-01-14

Applicant: Massachusetts Institute of Technology

Inventor： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis B. Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC: H04N5/355 ,  H04N5/3745 ,  H04N5/235 ,  H04N5/232

CPC classification number: H04N5/35581 ,  H04N5/23254 ,  H04N5/23267 ,  H04N5/2355 ,  H04N5/355 ,  H04N5/35572 ,  H04N5/37455

Abstract: When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US10079984B2

公开(公告)日：2018-09-18

申请号：US15463590

申请日：2017-03-20

Applicant: Massachusetts Institute of Technology

Inventor： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis B. Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC: H04N5/355 ,  H04N5/235 ,  H04N5/3745

CPC classification number: H04N5/35581 ,  H04N5/23254 ,  H04N5/23267 ,  H04N5/2355 ,  H04N5/355 ,  H04N5/35572 ,  H04N5/37455

Abstract: When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US11252351B2

公开(公告)日：2022-02-15

申请号：US16897339

申请日：2020-06-10

Applicant: Massachusetts Institute of Technology

Inventor： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC: H04N5/355 ,  H04N5/235 ,  H04N5/232 ,  H04N5/3745

Abstract: When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US10694122B2

公开(公告)日：2020-06-23

申请号：US16103366

申请日：2018-08-14

Applicant: Massachusetts Institute of Technology

Inventor： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis B. Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC: H04N5/355 ,  H04N5/235 ,  H04N5/232 ,  H04N5/3745

Abstract: When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US11632507B2

公开(公告)日：2023-04-18

申请号：US17577867

申请日：2022-01-18

Applicant: Massachusetts Institute of Technology

Inventor： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC: H04N5/355 ,  H04N5/235 ,  H04N5/232 ,  H04N5/3745

Abstract: When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US20170208274A1

公开(公告)日：2017-07-20

申请号：US15463590

申请日：2017-03-20

Applicant: Massachusetts Institute of Technology

Inventor： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis B. Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC: H04N5/355 ,  H04N5/235 ,  H04N5/3745

CPC classification number: H04N5/35581 ,  H04N5/23254 ,  H04N5/23267 ,  H04N5/2355 ,  H04N5/355 ,  H04N5/35572 ,  H04N5/37455

Abstract: When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.