Method and system for dismount detection in low-resolution UAV imagery

    公开(公告)号:US10127448B2

    公开(公告)日:2018-11-13

    申请号:US14829171

    申请日:2015-08-18

    Inventor: Riad Hammoud

    Abstract: A method for dismount detection in low-resolution UAV imagery, comprising providing an input image, processing a greyscale distribution of the input image, determining a rough classification in the input image based on the grayscale distribution, determining the optimal parameters based on the rough classification, estimating one or more potential dismount locations, applying an area filter to the one or more potential dismount locations, removing undesired locations from the one or more potential dismount locations, applying one or more secondary filters to the resulting one or more potential dismount locations, assigning a probability to the one or more potential dismount locations, and assessing desirability of the one or more potential dismount locations.

    MULTIPLE ACCESS WIRELESS NETWORK WITH LOW LATENCY SUBNET

    公开(公告)号:US20180317247A1

    公开(公告)日:2018-11-01

    申请号:US15582871

    申请日:2017-05-01

    Abstract: A method is disclosed for minimizing latency for high priority messages without sacrificing subnet bandwidth in a wireless, multiple access network such as Link 16. Nodes are able to simultaneously receive messages on at least two subnets, one of which is designated as a low latency (“LL”) subnet that transmits messages immediately on a contention access basis. A message acknowledgement protocol can be implemented and high priority messages that fail due to collisions or other reasons can be retransmitted. Jitter can be used to detect collisions. Embodiments include a plurality of “standard” and/or LL subnets designated for messages of varied urgency. High priority messages can reserve an acknowledgement timeslot for use only by the message recipient. Link 16 embodiments implement CMN-4, whereby the LL subnet is one of four subnets monitored by each node. Link 16 latencies in the LL network can be limited to less than 40 msec.

    Readout integrated circuit with multivalue digital counters

    公开(公告)号:US10079986B1

    公开(公告)日:2018-09-18

    申请号:US15694307

    申请日:2017-09-01

    Inventor: Allen W Hairston

    CPC classification number: H04N5/359 H04N5/3559 H04N5/37455 H04N5/378

    Abstract: A high density, high speed ROIC uses in-pixel integration capacitors and comparators to convert each pixel charge to a train of pulse spikes which increment a capacitor to successive, discrete charge values that represent a digital, non-binary count value of an in-pixel multi-value digital counter (MVDC). The MVDC can include a plurality of stages whereby comparators limit the maximum count of each stage and increment subsequent stages. The maximum count can be a power of two for subsequent direct ADC conversion to binary. The count values and the residual integration capacitor charge can be read out by ramping the comparator reference inputs and measuring the comparator output timings, effectively forming partially in-pixel single-slope ADC's. The comparators can include temporary internal positive feedback to maintain consistency of the spike pulses to better than 10%.

    APPARATUS FOR MOUNTING ACCESSORIES ON A TACTICAL RAIL OF A FIREARM

    公开(公告)号:US20180202769A1

    公开(公告)日:2018-07-19

    申请号:US15407406

    申请日:2017-01-17

    CPC classification number: F41G11/003 F41C27/00

    Abstract: A mounting mechanism is disclosed. The mounting mechanism includes a base, a clamp and a lever. The base includes a lever keeper and a first rail-engaging surface. The clamp includes a second rail-engaging surface. The lever, which includes a lever tab, is connected to the clamp at a pivot to allow an operator to selectively place the clamp in an engaged position or a disengaged position. The lever is configured to move the clamp to the engaged position to allow a rail projection to be secured in a mounting cavity located between the first rail-engaging surface of the base and the second rail-engaging surface of the clamp. When in the engaged position, the lever tab located on the lever is configured to be engaged with the lever keeper located on the base in order to prevent the lever from swinging away from the clamp.

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