32results about How to "Picture stabilization" patented technology

The invention provides an autonomous precision landing system of an unmanned aerial vehicle on a motion platform and a landing method. The autonomous precision landing system comprises a rotor unmanned aerial vehicle 1, an airborne platform camera 2, an airborne computer 3, airborne undercarriage magnetic devices 4, a vehicle-mounted iron ground 6 and a multi-layer nested identifier 7, wherein the multi-layer nested identifier 7 is composed of two-dimensional codes which are mutually overlapped, different in size, different in pattern and asymmetric in distribution; the two-dimensional codes with a small size cover the two-dimensional code with a large size; the two-dimensional code with a large size is covered with a plurality of two-dimensional codes with a small size along the advancing direction of a motor vehicle 5, and the number of the two-dimensional code with the maximum size is only one. According to the invention, the platform camera carried by the rotor unmanned aerial vehicle is utilized, the multi-layer nested identifier 7 is recognized by adopting the airborne platform camera 2, a vision-assisted rotor unmanned aerial vehicle autonomous landing system which is high in precision, good in reliability and low in cost is provided, and the system is particularly applicable to landing at the top end of a moving motor vehicle.

A method for deriving a synchronisation signal (35) from a video signal comprises tracking the blanking level (107) of the video signal with first and second slice level signals (26,27) and tracking the sync tip level (110) of the horizontal sync signal (109) of the video signal with third and fourth slice level signals (28,29) for determining the blanking level (107) and the sync tip level (110). A value for an intermediate slice level signal (30) is computed from the first, second, third and fourth slice level signals (26,27,28,29) so that the value of the intermediate slice level signal (30) lies approximately halfway between the blanking level (107) and the sync tip level (110). The video signal is compared with the intermediate slice level signal (30), and the synchronisation signal (35) is prepared from a logic signal by transitioning the logic signal from one of the logic high and logic low levels to the other of the logic high and logic low levels, each time the video signal transitions across the intermediate slice level signal (30).

The present invention relates to a stabilizer for a video camera. An upper arm consists of one stabilizing spring and two square light-weighted aluminum alloy plates, and a lower arm consists of two springs and three square light-weighted aluminum alloy plates. The upper ends of the two square light-weighted aluminum alloy plates of the upper arm are movably connected with a connecting rod below a holder respectively, and the other ends are movably connected with the upper ends of the three square light-weighted aluminum alloy plates of the lower arm through an upper arm connecting plate and a lower arm connecting plate. The lower ends of the three square light-weighted aluminum alloy plates of the lower arm are movably connected with a universal member, and a stabilizing spring is connected between the connecting rod below the holder and the upper and the lower arm connecting plates. Two stabilizing springs are connected between the upper and the lower arm connecting plates and the universal member 6 so as to form a double-arm stabilizing structure. The stabilizer combines the high stability of a Steadicam stabilizer and the portability of a handheld stabilizer, simplifies the inner structures of the two arms of the Steadicam stabilizer, and guarantees higher stability than a video camera, while having relatively simple structure and low cost.

The invention discloses an image stabilization-based remote sensing video satellite image processing method and system, and the method comprises the steps: carrying out the cataloguing processing of each frame, extracting the imaging time of each frame, enabling the imaging time of each frame to serve as a part of an image name, and enabling a plurality of image frames to form an image frame sequence group according to the time sequence; performing relative radiation correction on each frame of the sequence group to eliminate atmospheric radiation; after radiation correction, performing systemgeometric correction on each frame of the sequence group to eliminate geometric distortion generated in the frame during imaging; Taking the previous frame as a reference frame, and carrying out image stabilization processing on each current frame except the first frame in the sequence group, including motion estimation, motion compensation and image correction; and combining the image frame sequences subjected to image stabilization processing to form a video. In the processing process of the remote sensing video satellite, the imaging characteristics of a general remote sensing satellite and a video satellite are considered, and the processing process obviously improves the quality of the remote sensing video.

The invention discloses a portable video inspection instrument for main bolt holes of a reactor pressure vessel. The portable video inspection instrument comprises an image pick-up device, a driving device and an image receiving device, wherein the driving device is used for driving the image pick-up device to move up and down and rotate in the bolt holes, and the image receiving device is connected with the image pick-up device. According to the portable video inspection instrument for the main bolt holes of the reactor pressure vessel, disclosed by the invention, the driving device drives the image pick-up device to rotate and rise or fall in threaded holes, so that acquired thread image information can be complete and continuous, and entire pictures are constant in speed and are stable.

The invention discloses a bionic-based flying mechanical neck eye system and a control method thereof. The system involves an aircraft system, a mechanical neck eye system, an airborne computing device and a flight control unit; the mechanical neck eye system involves a mechanical neck arranged on an aircraft body, a binocular vision inertia system arranged at the tail end of the mechanical neck,and a mechanical neck main control for controlling the movement of the mechanical neck; and the binocular vision inertial system involves a binocular camera and an inertial measurement unit, the binocular vision inertia system is used for carrying out active observation and completing pose estimation on the tail end of the mechanical neck, and the mechanical neck is a six-degree-of-freedom seriesmechanical neck. According to the bionic-based flying mechanical neck eye system and the control method thereof, the binocular vision inertial system consisting of the double fisheye cameras and the inertial measurement unit is placed at the tail end of the mechanical neck to form a sensing system, so that the observation range of the system is larger; and the cameras is variable in pose, and hasthe capability of actively sensing the environment, so that the problem that the view field of an aircraft in the indoor environment is limited can be solved to a certain extent, and meanwhile, the shaking of pictures can be compensated.

The invention discloses a display screen, a driving method and a display device.The display screen comprises a first screen provided with n rows of scanning lines, a second screen provided with m rows of scanning lines and a grid driving circuit, the second screen is tightly attached to the first screen, and the first screen is internally provided with scanning lines G1, G2 ... Gn-1,Gn in sequence from the side away from the second screen to the side close to the second screen, and the scanning lines gn, g2 ... gm-1, gm are sequentially arranged in the second screen from the side close to the first screen to the side away from the first screen. In the same frame, the moment when the gate drive circuit outputs the scanning signal of the scanning line G1 corresponds to the moment when the gate drive circuit outputs the scanning signal of the scanning line gm; the timing at which the gate drive circuit outputs the scan signal of the scan line Gn corresponds to the timing at which the scan signal of the scan line g1 is output. The two display screens scan oppositely, and the moments of the scanning signals of the scanning lines corresponding to the splicing position correspond to each other, so that the image discontinuity at the splicing position is improved, and better visual experience is brought to a user.

The invention discloses a vehicle-mounted camera mounting structure. The vehicle-mounted camera mounting structure comprises a base, a camera mounting box and N rubber bands. A first round rod is vertically connected to the upper surface of the base, a round groove is formed in the bottom surface of the camera mounting box, one end of the first round rod is connected with the base while the other end of the first round rod is positioned in the round groove, the camera mounting box is provided with a side door, a data line hole and a camera hole, the side door is provided with a lock catch, one end of each rubber band is connected with the bottom surface of the camera mounting box, hooks are arranged at the other ends of the rubber bands, and a first round ring is arranged on the first round rod. The vehicle-mounted camera mounting structure has the advantages of reasonable design, convenience for vehicle-mounted camera mounting, mounting steadiness, good waterproof effect, capability of enabling camera picture to be stable and less proneness to water inflow during cleaning.

The invention relates to a marine navigation radar, which comprises a transmitter (50)and a receiver(70), especially comprises a signal process and display system(100), wherein, interface circuit in said signal process and display system connects receiver and microprocessor main circuit, and output television video signal lines R, G, B of said microprocessor main circuit are connected to scanning display circuit(160), besides, the said microprocessor main circuit(110) is also connected to operating circuit with instruction input keyboard(130).

The invention relates to a treatment process of rice paper to make paints on the rice paper clear and make storage time long. The raw materials used herein comprise mica, realgar, orpiment, saltpeter, cinnabar, and quartz. The process comprises the following steps: adding the raw materials in water, heating, and fuming the rice paper by using the gas generated from heating.

The invention provides a high-definition wireless integrated automatic tracking recording and broadcasting device comprising a pedestal, an installation rack which is supported on the pedestal, and a main body which is connected onto the installation rack. The recording and broadcasting device is also provided with a rotary mechanism, a driving device and a transmission mechanism which is connected with the rotary mechanism and the driving device in a transmission way. The recording and broadcasting device further comprises a vibration damping mechanism which is connected with the driving device. The high-definition wireless integrated automatic tracking recording and broadcasting system is high in quality of recorded video frames and stable in the frames.