11 results about "Color vision" patented technology

The invention discloses a LiDAR-IMU-camera tight coupling positioning and mapping method and device for a mobile platform, and belongs to the technical field of robot SLAM. Synchronously triggering the color camera, the laser radar and the IMU through hardware, and unifying timestamps; performing compensation and distortion removal on the laser point cloud motion by the IMU data; based on curvature, intensity and density self-adaptive downsampling, local plane fitting errors are used for distributing observation weights; the IMU pre-integration pose is used as an initial value, point-to-surface registration of the weighted point cloud and the local map is carried out, and a laser-IMU tight coupling odometer factor is obtained; the color image and the laser intensity graph are fused into a multi-mode loopback descriptor, and loopback factors are generated through global retrieval and geometric verification; and inputting an odometer, an IMU, a laser loopback factor and a visual loopback factor into an increment factor graph optimizer, jointly solving a global optimal key frame pose, and outputting a dense laser point cloud map and a color visual point cloud map. The method can be operated in real time on an embedded platform, effectively inhibits drifting, and realizes centimeter-level global consistent positioning and mapping.

The utility model relates to the technical field of natural colored gemstones, and discloses a visual color sorting machine for natural colored gemstones, which comprises a frame, a supporting plate is fixedly connected to the middle of the inner side of the frame, a supporting frame is fixedly connected to the left side of the top of the supporting plate, and a circular plate is fixedly connected to the middle of the top end of the supporting plate. A circular frame is fixedly connected to the top of the circular plate, a photoelectric sensor is fixedly connected to the rear side of the top of the frame, a sliding block is fixedly connected to the top end of the photoelectric sensor, a first sliding block is slidably connected to the outer wall of the sliding block, and a U-shaped strip is fixedly connected to the bottom of the first sliding block. According to the gemstone color screening device, when the gemstone is located at a proper position on the circular plate, sufficient and uniform illumination and gemstone color image data collected by the visual sensor are provided for the gemstone, so that the gemstone can be effectively subjected to color screening, subsequent use of an operator is facilitated, and certain convenience is improved.

The application provides a three-dimensional space reference reasoning method and device, electronic equipment and storage medium, and relates to the technical field of data processing. The method comprises the following steps: acquiring RGB-D image data of a target scene and a natural language instruction containing a space constraint; wherein the RGB-D image data is multi-modal image data containing color visual information and depth information; inputting the RGB-D image data and the natural language instruction into a pre-trained visual language large model to output a text containing an explicit reasoning process and target point coordinates conforming to the space constraint; wherein the visual language large model is obtained through two-stage supervised learning fine-tuning enhanced by depth alignment and space understanding and reinforcement learning fine-tuning based on the explicit reasoning process; and the visual language large model comprises an independent depth encoder used for processing depth information. Through the method provided by the application, the comprehensive performance in a complex space reference task is improved.

To provide a color vision characteristic measuring device that measures the color vision characteristics of the eyes of a subject.SOLUTION: A color vision characteristic measurement device for measuring a color vision characteristic of the eyes of a subject includes: a display unit for presenting a predetermined index to the subject; an illumination unit for irradiating the index with illumination light; a measurement unit for measuring at least one of a movement of the eye of the subject, brain waves, and a brain blood flow; and a control unit for controlling the display unit and the illumination unit. The control unit moves the index while changing the wavelength of the illumination light in a predetermined wavelength width, receives measurement results of the measurement unit for each wavelength of the illumination light, and measures the color vision characteristics on the basis of the measurement results.SELECTED DRAWING: Figure 2

The application discloses a kind of mist lenses, including lens barrel, front fixed group, zoom group, compensation group, rear fixed group and switching mechanism;The front fixed group, the zoom group, the compensation group and the rear fixed group are sequentially arranged along the axial direction of the lens barrel;The zoom group includes second concave lens and positive and negative double cemented lens group;The compensation group is a positive and negative positive three cemented lens group;The rear fixed group is third concave lens;The switching mechanism is connected with the shaft, and is used to drive the shaft to rotate, so that the infrared filter or the visible light filter is rotated to the axis of the lens barrel.The beneficial effects of the technical scheme proposed in the application are: the lens can be freely switched to infrared imaging mode or visible light imaging mode, which can ensure to provide mist vision in heavy fog environment, and also can ensure to provide color vision in normal weather conditions.

The utility model relates to the technical field of luminous fishing gears, in particular to a luminous buoy with a glass fiber buoy tail, which comprises a buoy body, a buoy foot is fixedly connected to the lower end of the buoy body, a mounting seat is in threaded connection with the upper end of the buoy body, and the buoy tail is fixedly connected to the upper end of the mounting seat. A color matching assembly is arranged inside and outside the float tail, the color matching assembly comprises a cylinder fixedly connected to the interior of the float tail, a first color block and a second color block are fixedly connected to the exterior of the float tail, a cylinder cover is in threaded connection with the upper end of the float tail, and a second sealing ring is fixedly connected to the exterior of the cylinder cover; a fluorescent card is arranged between the buoy tail and the cylinder, aiming at a fishing hand with color weakness, the buoy can achieve the purpose of replacing the color of the buoy eye on the buoy tail by replacing the fluorescent card, so that the utilization rate of the buoy is improved, and the buoy is higher in brightness, lighter in dead weight, more striking, better in flexibility and not prone to eye crossing and mixing.

The invention discloses an LED module light color visual detection method and system based on multispectrum, and the method comprises the steps: initializing to a preset detection gear, the spectral range of the preset detection gear comprises a first buffer region of a wavelength lower limit neighborhood and a second buffer region of an upper limit neighborhood, and the upper limit of the first buffer region is smaller than the lower limit of the second buffer region; acquiring spectral characteristic parameters of the LED module; if the main wavelength is the main wavelength, the relation between the main wavelength and the upper limit and the lower limit of the current gear is judged, if the condition is met, a low-level gear or a high-level gear is switched to, and a corresponding buffer area threshold value is verified after switching; if the statistical value is the wavelength distribution statistical value, the relationship between the statistical value and a preset threshold value is compared, and if the condition is met, corresponding gear switching is carried out; and finally, switching the detection to the decided target gear, and synchronously adjusting the integral time and the gain parameter. According to the invention, the adaptive capability and stability of the detection process are improved, and misjudgment and measurement fluctuation during multi-model switching are reduced.

Color vision correction filter (1), comprising: at least one type of dye material (20), wherein a wavelength at which the transmittance of the color vision correction filter (1) is lowest in a wavelength band in the range of 440 nm to 600 nm, including both boundary values, is at least 485 nm and at most 585 nm, a spectrum of the color vision correction filter (1) includes a valley where the transmittance is lowest at the wavelength, a bandwidth of the valley, if the transmittance of the color vision correction filter (1) is a predetermined value, at least 30 nm and at most 115 nm, and The specified value lies within a range of 40% to 60%, including both extreme values.

The present application provides a black photosensitive resin composition, a color filter including a black matrix manufactured using the black photosensitive resin composition, and a display device including the color filter. The black photosensitive resin composition includes a colorant including a specific pigment, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent, and can form a coating film that can exhibit a transmittance of 90% or more in a specific wavelength region. The color filter including the black matrix manufactured using the black photosensitive resin composition and the display device including the color filter have excellent reliability, durability, and the like, and can effectively improve the effect of black color vision perception.

A chemical-detecting apparatus includes an array of sensors. Each sensor of the array of sensors is oriented skyward in operation. Each sensor includes a chemical receiver including a plurality of infrared color vision filters cooperating to detect a plurality of infrared color vision signatures. The plurality of infrared color vision signatures respectively correspond to a plurality of chemicals. Each sensor includes a transmitter configured to transmit a detected chemical identifier, based on a detected infrared color vision signature of the plurality of infrared color vision signatures and corresponding to a detected chemical of the plurality of chemicals, to at least one neighboring sensor of the array of sensors. The transmitter is configured to transmit a detected chemical confirmation from the neighboring sensor to a first-identifying sensor of the array of sensors and is configured to transmit a confirmed chemical alarm, based on the detected chemical confirmation, from the first-identifying sensor.

An image processing apparatus for generating a right eye image and a left eye image, includes one or more memories storing a program, and one or more processors that, upon execution of the stored program; are configured to operate as an acquisition unit configured to acquire a color vision characteristic representing a color appearance difference between right and left eyes of a user; and a conversion unit configured to perform color conversion on at least any one of the right eye image and the left eye image based on the color vision characteristic.