-
公开(公告)号：US20220165049A1
公开(公告)日：2022-05-26
申请号：US17442467
申请日：2020-03-20
Applicant: The Secretary of State for Defence
Inventor： Sean Michael Tsi-Ong Tipper
Abstract: Video camera or video camera module, comprising an RGB image sensor, a computer processor adapted to perform pre-processing followed by video compression, and a dazzle detector, characterised in responding to dazzle in one colour channel by reducing values in that colour channel prior to compressing the video data. This has the advantage that in the event of laser dazzle that is specific to a colour channel, the compressed video data generated will retain more detail from the other colour channels compared to a conventional camera.
-
公开(公告)号：US10859435B2
公开(公告)日：2020-12-08
申请号：US16468730
申请日：2017-12-12
Applicant: THE SECRETARY OF STATE FOR DEFENCE
Inventor： Christopher David Burgess , Sean Michael Tsi-Ong Tipper
IPC: G01J1/42 , G01J1/04 , G01S3/78 , H04N5/225 , G06K9/20 , G06K9/46 , G01S7/48 , G06K9/00 , H04N7/18
Abstract: A laser detector apparatus (1) is provided, where a pixel array (3) is arranged behind a lens arrangement (4) such that distant objects (9) (in general, those at infinity) are out of focus at the pixel array. The image from the pixel array is evaluated by a computer processor (6) to detect such out of focus images which will be of a known size and shape (generally circular spots of known width). This can enable distant laser threats to be readily distinguished from nearby bright objects (10), whilst also protecting the pixel array from powerful laser sources (because the laser energy is not focussed to a point, on the pixel array it is less likely to damage the pixel array). It can also enable the wavelength of the laser to be accurately determined from the ratio of colours in the image of the laser spot, because it will typically not be a saturated image. The apparatus and method are particularly suitable for identifying and distinguishing laser sources across a wide range of brightnesses, and is also suitable for detecting and distinguishing multiple laser sources.
-
公开(公告)号：US11920978B2
公开(公告)日：2024-03-05
申请号：US17054411
申请日：2019-05-22
Applicant: THE SECRETARY OF STATE FOR DEFENCE
Inventor： Sean Michael Tsi-Ong Tipper , Christopher David Burgess
CPC classification number: G01J1/44 , G02B26/02 , G01J2001/4238 , G01J2001/448
Abstract: A method of detecting pulsed radiation comprising the steps of irradiating at least a portion of an array of sensor elements with pulsed radiation (71); addressing the array using a rolling shutter operation (72); reading the array to obtain a radiation image (73); and then applying a pulse detection operation (74) to the radiation image. The rolling shutter operation (72) is configured to address each element line of the array for a predetermined integration period. The predetermined integration period being calculated using an integration period function, itself a function of an anticipated pulse repetition interval of the pulsed radiation. The method and apparatus for the same enable low cost camera arrays to be used for pulse detection and for wider application in the field of low cost communications.
-
公开(公告)号：US11769325B2
公开(公告)日：2023-09-26
申请号：US17442467
申请日：2020-03-20
Applicant: The Secretary of State for Defence
Inventor： Sean Michael Tsi-Ong Tipper
Abstract: Video camera or video camera module, comprising an RGB image sensor, a computer processor adapted to perform pre-processing followed by video compression, and a dazzle detector, characterised in responding to dazzle in one colour channel by reducing values in that colour channel prior to compressing the video data. This has the advantage that in the event of laser dazzle that is specific to a colour channel, the compressed video data generated will retain more detail from the other colour channels compared to a conventional camera.
-
-
-
Search Results
4
records
(took 0.014 seconds)
