15results about How to "Uniform brightness distribution" patented technology

The invention relates to the technical field of bus control, in particular to a method and system for controlling and monitoring landing light based on a CAN bus. The method comprises the following steps: setting a light control node in an aircraft landing light system, and performing control network connection and landing light local response control on the light control node and a central control unit by using a CAN bus protocol to generate a landing light local response control instruction; starting corresponding landing light in an aircraft landing light system according to the landing light local response control instruction, performing light condition real-time monitoring and judgment analysis, and if the landing light is determined to be in an on-light state, performing brightness non-uniformity control management so as to execute on-state brightness non-uniformity control work; and if it is determined that the landing light working state is a closed state, light operation fault control management is carried out to execute closed state fault adjustment control work. The intelligent level of the landing light control system can be improved.

The invention discloses an automatic focusing and distortion optimization method based on a large-target-surface industrial lens, relates to the technical field of lens distortion optimization, and aims to accurately identify different distortion types and provide accurate data for subsequent optimization and adjustment by comprehensively analyzing the distortion of the lens from multiple dimensions (radial, tangential and comet distortion). Through calculation of a comet distortion coefficient HJ obtained by calculating a detailed radial distortion coefficient # imgabs0 #, a first tangential distortion coefficient # imgabs1 # on an x axis and a second tangential distortion coefficient # imgabs2 # on a y axis in combination with S44, various distortion conditions (radial, tangential and comet distortion) of the lens can be quantified, and the total distortion rate D is calculated; the distance between the front focusing group A and the rear fixed lens group B of the lens is evaluated and corrected, and the imaging quality of the lens is improved through step-by-step correction (including focal length, distortion, brightness attenuation and the like) in each step from S2-S5.

This utility model discloses a turn signal assembly with uniform brightness and a high safety factor, including a turn signal cup and a front turn signal light guide plate. The turn signal cup has a turn signal hole for mounting the turn signal. The turn signal light guide plate has a main light guide plate facing the turn signal hole, an inner light guide plate and an outer light guide plate, located on the left and right sides of the main light guide plate and bent inwards respectively. The angle between the inner light guide plate and the main light guide plate is acute, and the angle between the outer light guide plate and the main light guide plate is obtuse. A light guide ridge is provided on the inner side of the turn signal light guide plate, and an inwardly recessed stepped portion is provided on the bottom of the outer side. This utility model's main light guide plate, in conjunction with the inner acute-angled and outer obtuse-angled light guide plate portions, expands the light diffusion range through refraction at different angles, avoiding the central bright spot or edge dark area of ​​traditional turn signals. The horizontal ridges of the main light guide plate work in conjunction with the gradually widening ridges of the inner / outer light guide plates, ensuring that the light is emitted uniformly after multiple refractions, resulting in a more balanced brightness distribution and improved signal recognition.

The embodiment of the invention discloses an image flat field correction method and device and a computer readable storage medium, which are used for reducing the parameter debugging difficulty. The method comprises the steps of obtaining a calibration image and a target image; calculating a first non-uniform value of the calibration image according to the first ROI of the calibration image; calculating a second non-uniform value of the target image according to the second ROI of the target image; calculating a difference value according to the first non-uniform value and the second non-uniform value, wherein the difference value is a ratio of the second non-uniform value to the first non-uniform value; generating a target correction coefficient graph according to the difference value; and performing flat-field correction on the target image according to the target correction coefficient graph.

The utility model provides an LED (light-emitting diode) fish gathering lamp, which belongs to the technical field of illumination and comprises a lamp holder and a light-emitting component, the lamp holder comprises a first plane and a second plane, the first plane and the second plane are connected to form a bending angle, the light-emitting component comprises a first lamp group and a second lamp group, and the power of the first lamp group is smaller than that of the second lamp group. In order to achieve a better fish gathering effect, a plurality of fish gathering lamps are usually used in a combined mode, and due to the fact that the first lamp sets on the two sides of each fish gathering lamp adopt the LED light sources with relatively small power, a weak-illumination area, namely a so-called dark area, can be formed between the lamps when the fish gathering lamps are independently used, however, in the design, the LED light sources are used in a combined mode. The small-power first lamp sets on the side edges can form a light ray superposition effect between every two adjacent fish gathering lamps, so that the problem of insufficient illumination in a dark area is solved, the brightness distribution of the whole irradiation area is more uniform, and the fish gathering efficiency is improved.

The invention discloses a spliced image latticed shadow elimination method based on overlapping region consistency. The method comprises the following specific steps: acquiring adjacent image sequences with partial overlapping regions; selecting a central region as an ideal gray value reference by using a calibration image shot under a uniform light source, and calculating a deviation image; establishing a basic vignetting correction model through spherical surface fitting based on the deviation image; determining an overlapping region through an image registration algorithm, and calculating a gray value error sum in the overlapping region; an optimal correction coefficient is determined by minimizing the sum of total gray value errors of all overlapped areas, and the correction model is dynamically adjusted; and finally, correcting the image sequence by using the updated correction model, and eliminating the latticed shadow. According to the method, the brightness uniformity and the visual consistency of the spliced image are improved, and the latticed shadow caused by the vignetting effect can be effectively eliminated.

The invention discloses an in-cabin looking-around confocal lens and a camera device and a driving tool with the same, the lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side, and the following conditions are met: 13.14 lt; fOV / Ym / 2lt; 24.36, FOV is the angle of view of the lens, and Ym is the image height of the lens corresponding to the FOV. According to the invention, large-view-field coverage is realized, and the consistency of visible light and infrared imaging is considered at the same time; it is ensured that the lens can shoot high-definition pictures at the high temperature of + 125 DEG C and the low temperature of-40 DEG C; the imaging resolution is high, the MTF level is kept excellent in a full-view-field range, and center and edge imaging is balanced; the aberration correction capability is outstanding, the chromatic aberration control is excellent, the chromatic aberration is stably controlled within 2pixel, and the purple edge inhibition effect is remarkable; and when the field angle is 80 degrees, the relative illumination is higher than 50%, and the image brightness distribution is uniform.

A light emitting module includes a light guide, a first light source, and a second light source. The light guide includes a first face, a second face oriented not parallel to the first face, a third face connected between the first face and the second face, and a light-emitting surface larger than each of the first face, the second face, and the third face. The first light source faces the first face. No light source is positioned between the first light source and an edge of the first face. The second light source faces the third face. No light source is positioned between the second light source and an edge of the third face. A distance from the second light source to the edge of the third face is greater than a distance from the first light source to the edge of the first face.

The present application relates to a method, system and non-transitory computer readable recording medium for correcting luminance of a spherical image. According to an aspect of the present application, there is provided a method for correcting luminance of a spherical image, comprising: calculating a photographing luminance distribution of a region corresponding to a sphere as a physical quantity measurement object in a plurality of images photographed with respect to the sphere; and correcting the photographing luminance distribution of the region corresponding to the sphere in at least one of the plurality of images with reference to a reference luminance distribution.

The application provides a head-mounted wading vision enhancement system and an underwater image enhancement processing method thereof. The method comprises: obtaining a to-be-processed underwater image and an image enhancement processing model based on multi-channel fusion; performing highlight enhancement processing on the to-be-processed underwater image by using an SSR algorithm; and performing enhancement processing on the to-be-processed underwater image by using the image enhancement processing model, which comprises: performing repair preprocessing on the to-be-processed underwater image to obtain a plurality of preset underwater red channel pre-repaired underwater images; extracting image features and residual terms of the to-be-processed underwater image and each pre-repaired underwater image respectively, and fusing a plurality of the image features to obtain a fused image; and introducing a plurality of the residual terms into the fused image to obtain an enhanced processing image. The scheme of the application can eliminate the influence of water absorption and scattering of light, thereby improving the image enhancement effect of the underwater image.

The megaphone comprises a lower cylinder and an upper cover, a ring body is arranged between the lower cylinder and the upper cover, a circuit board is arranged above the ring body, the bottom end of the circuit board is provided with an LED lamp, the top end of the ring body is fixedly connected with a first slot, the top end of the ring body is provided with a groove, and the top end of the ring body is fixedly connected with a second slot. The megaphone with the lamp ring relates to the technical field of megaphones, the megaphone with the lamp ring is provided with the LED lamp, the ring body, the first slot, the groove and the second slot, the appearance of the megaphone with the lamp ring is more attractive and striking during use, and the color of the LED lamp can be changed along with sound.

The application relates to the technical field of image processing, in particular to a clinical ultrasonic image auxiliary screening system based on deep learning. The system comprises an ultrasonic image preprocessing module, a lesion region segmentation module, an image lesion labeling module and a lesion auxiliary screening module, can acquire clinical ultrasonic images and carries out gray processing and neighborhood gray balance processing, so as to generate clinical ultrasonic balanced images; carries out pixel normalization and lesion region segmentation based on tissue boundary blur on the clinical ultrasonic balanced images, so as to generate clinical ultrasonic image lesion region blocks; carries out image lesion labeling through the clinical ultrasonic image lesion region blocks, so as to generate a clinical ultrasonic lesion labeling image set; constructs an image lesion auxiliary screening model and carries out lesion auxiliary screening, so as to output the lesion position, lesion type and lesion severity corresponding to the lesion existing on the clinical ultrasonic image. The application can realize accurate analysis of clinical ultrasonic images, so as to assist in efficiently completing lesion screening.

Embodiments of the present application disclose a brightness compensation method and device, a storage medium and a brightness compensation system. The brightness compensation method comprises: closing a brightness compensation function of a to-be-compensated screen, calculating and storing a brightness compensation parameter of the to-be-compensated screen; opening the brightness compensation function of the to-be-compensated screen, repeatedly calculating and storing the brightness compensation parameter of the to-be-compensated screen until a display effect of the to-be-compensated screen meets a preset first condition; after the display effect of the to-be-compensated screen meets the preset first condition, and in a case where the brightness compensation function of the to-be-compensated screen is opened, performing at least once the operation of calculating and storing the brightness compensation parameter of the to-be-compensated screen, so that the to-be-compensated screen performs brightness compensation according to the last stored brightness compensation parameter.

The present invention relates to a light mixing module, a display device using the light mixing module and a design method, which are characterized in that: it includes a main substrate with a printed circuit, and at least one chip-level light-emitting unit arranged on the main substrate, the chip-level light-emitting unit includes an LED chip, a backlight bracket, a shading element and a supporting element, the backlight bracket is mounted on the main substrate, the backlight bracket has a cup-shaped reflecting surface surrounding the periphery of the LED chip; the shading element is suspended above the LED chip through the supporting element. The advantages of the present invention are: the cup-shaped reflecting surface reflects the light directly emitted by the chip and reflected from the shading element to the area to be supplemented with light, which solves the problem of uneven brightness of the light-emitting layer of the light mixing module, and avoids the loss of reflected light, thereby improving the brightness and the overall display effect.

The utility model relates to an 8-shaped stroke segment nixie tube and display equipment. The 8-shaped pen section nixie tube comprises a reflecting plate, a light guide plate and a light guide plate, wherein the reflecting plate is provided with a 8-shaped pen section light-emitting hole, and a containing groove is formed below the reflecting plate; the light-transmitting belt film is attached to the upper portion of the reflecting plate and is a transparent or semitransparent whole-body film; the light source assembly is arranged in the containing groove. The technical problems that a traditional nixie tube is difficult to give consideration to complex graph and compact 8-shaped stroke segment display, and the attractiveness is limited are solved.