35results about How to "Consistent clarity" patented technology

The invention discloses a camera and a depth of field expanding method. The distance between a lens and a light sensing chip is decided by the distance between the lens and an object, or the distance between the lens and the light sensing chip can be adjusted along with the distance between the lens and the object, so that a close-shot image, a long-shot image and an image of a shot main body can be obtained according to the distance between the lens and the light sensing chip, and the close-shot image, the long-shot image and the image of the shot main body can be obtained via shooting at one step. The close-shot image is a close-shot clear and long-shot fuzzy image, the long-shot image is a long-shot clear and close-shot fuzzy image, and the image of the shot main body is a clearest image of the shot main body between the long-shot image and the close-shot image. Through combination of the close-shot image, the long-shot image and the image of the shot main body, an image in which the close-shot image, the long-shot image and the image of the shot main body are clearest can be obtained, or an image in which the shot main body and the vicinity of the shot main body are clear while other parts are fuzzy is realized, and ultra-long depth-of-field or ultra-short depth-of-field shooting is realized.

The present invention relates to an aberration emendations system and method for a digital camera. The present invention comprises an optical lens, an axial movement mechanism, a group of photographic components and a group of image units. The photographic component is arranged on the axial movement mechanism and can generate a first image and a second image at a first focus place and a second focus place. The image unit receives the first image and the second image, calculates the acquisition area of the first image and the acquisition area of the second image and combines the two acquisition areas to a third image. The method of the present invention comprises steps as follows: the beam of the object to be photographed is projected by the optical lens; the first image is generated; the second image is generated; the clear parts of the first image and the second image are obtained and combined to the third image. The present invention solves the phenomenon that the definition of the center and the surrounding areas are different through providing the aberration emendations system and method.

The invention discloses an endoscope imaging method and an endoscope imaging system. The endoscope imaging method comprises the following steps of illumination, visible light and fluorescence collection, image signal collection and image processing. Visible light reflected by a human subject and excited fluorescence are collected through two sensors located at the front end of an endoscope tube, corresponding image signals are generated, and then the image signals are transmitted to the rear end to be processed to obtain a final endoscope image. Compared with the prior art that visible light and fluorescence are transmitted to the rear end through a light path and then collected and processed, the endoscope of the invention solves the problem that the precision is reduced due to light pathpropagation, the imaging precision is improved, and the light path cost and the light path occupied space are also saved; in addition, the visible light and the fluorescence can be focused and collected respectively due to the design of independent light paths of the visible light and the fluorescence, so that the visible light image and the fluorescence image are consistent in definition; and the endoscope imaging system is binocular stereoscopic vision, and can obtain three-dimensional information to compensate fluorescence brightness of different depth areas.

The invention belongs to the field of monitoring and provides a multi-lens panoramic network camera and a stitching method. The multi-lens panoramic network camera comprises: N SENSOR plate modules which are used for imaging, wherein each SENSOR plate module comprises a distortionless high-definition lens and a high-definition light-sensitive imaging chip, the sum of the angles of view of the distortionless high-definition lenses and the included angles between the distortionless high-definition lenses is controlled to form an angle of view of 180 degrees, and N is an integer greater than or equal to 2; an image preprocessing and stitching module which is connected with the N SENSOR plate modules and is used for stitching images picked up by the adjacent SENSOR plates to generate a 180-degree panoramic whole image and transmitting the 180-degree panoramic whole image to a coding module; and the coding module which is connected with the image preprocessing and stitching module and is used for receiving and coding the 180-degree panoramic whole image. The multi-lens panoramic network camera has the following beneficial effects: on one hand, 180-degree monitoring without a dead angle in the horizontal or vertical direction is realized; on the other hand, the camera is high in integrity, convenient to mount and maintain, and low in cost, and advantageous for popularization and use.

The invention discloses a method for processing an infrared digital video signal at night, which comprises the following steps of: firstly, converting a monitoring video image represented by RGB color codes into an image represented by YUV color codes to acquire the component Y of a gray value in the monitoring image represented by the YUV color codes; secondly, in a loop filtering link, performing filtering on the component Y of the gray value of an image pixel represented by the YUV color codes through a mathematic morphological algorithm, performing an erosion operation on the image converted into the format of YUV color codes by the mathematic morphological algorithm and by using open operation according to the property of the mathematic morphological algorithm, and then performing a dilation operation on the image; and finally, performing software filtering on the component Y subjected to the software filtering of the mathematic morphological algorithm by a median filtering algorithm. In the method, the monitoring image at night is subjected to denoising enhancement by combining the mathematic morphological algorithm and the median filtering algorithm, and practice tests prove that the method has the excellent denoising effect.

The invention provides a near-eye display system. The near-eye display system comprises a light source module, a polarizing and light splitting element, a first image display device, a first phase retarder, a second image display device, an electronically-controlled optical device, a first reflective amplifying element, a second reflective amplifying element, a second phase retarder and a reflecting element. The first image display device and the second image display device respectively output first beam of sub-image light and second beam of sub-image light of a to-be-displayed image, the first beam of sub-image light and the second beam of sub-image light of the to-be-displayed image are respectively reflected and converged to human eyes by the first reflective amplifying element and thesecond reflective amplifying element so as to form a first to-be-displayed sub-image and a second first to-be-displayed sub-image, and the first to-be-displayed sub-image and the second first to-be-displayed sub-image respectively formed in the human eyes can be spliced into the to-be-displayed image in user vision. The near-eye display system provided by the invention has the characteristics of large field of view and high resolution ratio and is smaller in size compared with a near-eye display system with a traditional display optical module.

The invention provides a near-eye display optical module and a near-eye display system. The near-eye display system comprises the near-eye display optical module and an image display device. The near-eye display optical module comprises an electrically-controlled liquid crystal polarization element, a first reflective amplifying element, a second reflective amplifying element, a phase retarder anda reflecting element. The image display device sequentially outputs first beam of sub-image light and second beam of sub-image light of a to-be-displayed image, and a first to-be-displayed sub-imageand a second to-be-displayed sub-image formed by reflection and convergence by the first reflective amplifying element and the second reflective amplifying element can be spliced into the to-be-displayed image in user vision. The near-eye display optical module and the near-eye display system provided by the invention have the characteristics of large field of view and high resolution ratio and are smaller in size compared with a near-eye display optical module with a traditional display optical module and a near-eye display system.

The embodiment of the invention discloses an imaging mechanism and a terminal, belonging to the technical field of photographic equipment, wherein the imaging mechanism and the terminal both comprise a glass cover plate and a camera, one side face of the glass cover plate protrudes outwards to form a first cambered surface, the other side face of the glass cover plate is opposite to the camera, the glass cover plate is provided with a thickness difference elimination structure at a part opposite to the camera, and the thickness difference elimination structure is used for reducing thickness difference between the two side faces of the glass cover plate; in conclusion, in the imaging mechanism and the terminal provided by the invention, thickness difference between the two side faces of the glass cover plate is reduced through the thickness difference elimination structure, consequently, thickness of the glass cover plate tends to be uniform, and therefore, refraction generated by light passing through the glass cover plate naturally also tends to be same, namely, phase error generated by the camera is reduced, definition of photographed images is guaranteed to be consistent, and a situation of focusing failure is also avoided.

The present invention discloses an error compensation method of a rotation axis swing angle of a neutron chromatography imaging system. The method comprises: based on a projection geometrical symmetry principle of a parallel neutron beam, superimposing projection data within a range of 360 degree rotation of a sample to obtain a synthetic projection image with a unique symmetry axis, wherein, the symmetry axis of the synthetic projection image is a projection line of a rotation axis of the sample; further calculating out a pixel value gradient angle histogram of the synthetic projection image, wherein distribution of the histogram is an even function; and calculating a symmetry center of the even function, wherein a gradient angle corresponding to the symmetry center position is a swing angle of the rotation axis. By using the measured rotation angle as a correction parameter and introducing the correction parameter into a reconstruction algorithm, error compensation for the swing angle of the rotation axis can be realized, so that consistency of a definition of each reconstruction tomography of the sample is ensured, and reconstruction accuracy is effectively improved.

The invention discloses a manufacturing method and an injection mold for a multi-layer lens. The lens is manufactured through two times of injection molding; firstly, a basic layer lens is subjected to injection molding; and a top layer lens and a bottom layer lens are subjected to injection molding at the same time, and the top layer lens, the basic layer lens and the bottom layer lens are bonded into a whole. The basic layer lens formed during injection molding is placed on the middle portion of a mold cavity of the injection mold; the mold cavity is spaced into an upper cavity and a lower cavity; by performing injection molding on a feeding port of the basic layer lens, raw materials enter the upper cavity and the lower cavity correspondingly through an injection molding channel communicated with the feeding port; the upper cavity is used for performing injection molding on the top layer lens; and the lower cavity is used for performing injection molding on the bottom layer lens, and the top layer lens and the bottom layer lens are bonded into a whole. The injection mold is used for injection molding of the multi-layer lens and comprises an upper cover, a lower cover and a mold frame which comprises an upper frame and a lower frame; the upper frame and the lower frame are connected together in a hinged manner; the upper cover is embedded into the upper frame; the lower cover is embedded into the lower frame; and when the upper frame and the lower frame are closed, inner cavities of the upper cover and the lower cover are closed to form the mold cavity.

The invention provides a high-transparency low-haze BOPET anti-fog film and a preparation method thereof. The anti-fog film is composed of an anti-sticking layer, a base material layer, a corona layerand an anti-fog coating, wherein the base material layer is located between the anti-sticking layer and the corona layer, and one side of the corona layer is covered with the anti-fog coating. According to the invention, a biaxially oriented polyester thick film production process is adopted, and a manufacturing process of coating anti-fog liquid on line is adopted, so that the anti-fog film which can be suitable for personal protective articles required by daily life of people and sanitary protective appliances necessary for medical workers is prepared; and the BOPET anti-fog film has the characteristics of high transparency, high glossiness, excellent anti-fog performance, corrosion resistance, high impact resistance, safety, reliability and high practicability.

The invention discloses a device for adjusting the rear intercept of a lens and a camera, and the device comprises a first part, a second part, and a third part, the first part comprises a lens seat,the second part is a coarse adjustment assembly, and the third part is a fine adjustment assembly. According to the invention, the second part is connected with the third part, so that the second partcan rotate 360 degrees around the lens seat along the axial direction and can rotate at a small angle around other directions, and the inclination is roughly adjusted; six inclined set screws are uniformly distributed in the outer ring area of the ring part at the bottom of the third part of the assembly base along the axial direction; image plane inclination in different directions can be accurately adjusted; six fixing set screws are evenly distributed on the side face of the outer ring area of the ring portion of the bottom of the base in the radial direction, when the third component is locked, only three fixing set screws which are evenly distributed are needed. The rear intercept and the image plane inclination can be adjusted, the image definition in the full view field range is consistent, meanwhile, the adjusting precision is high, operation is convenient, and time is saved.

The invention provides an augmented reality display optical module set and an augmented reality display system. The augmented reality display system includes an augmented reality display optical module set and an image display device; the augmented reality display optical module set includes an electrically controlled liquid crystal polarization element, a polarization beam splitting element, a first reflection element, a second reflection element, a third reflection element, a first reflection and amplification element, and a second reflection and amplification element; the image display device sequentially outputs the first sub-image ray and second sub-image ray of a to-be-displayed image; and a first to-be-displayed sub-image ray and a second to-be-displayed sub-image which are formed by means of reflection and convergence of the first reflection and amplification element and the second reflection and amplification element are visually spliced into the to-be-displayed image for a user. The augmented reality display optical module set and the augmented reality display system have the advantages of large field of view and high resolution. The augmented reality display optical module set and the augmented reality display system are small in size compared with a conventional display optical module set and augmented reality display system.

Belonging to the technical field of preparation of waterborne astigmatic screen paint, the invention specifically discloses a preparation method of a waterborne astigmatic screen paint. The preparation method of the waterborne astigmatic screen paint specifically includes the steps of: S1: activating a polyurethane resin emulsion: adding the polyurethane resin emulsion into the stirring tank of adispersion machine, starting the dispersion machine, and setting the rotating speed of the dispersion machine at 500r/min to activate the molecules of the polyurethane resin emulsion; S2: performing secondary feeding and dispersion; S3: adding tailings and performing mixing further; S4: conducting sampling and detection; and S5: preparing a finished product. The prepared waterborne astigmatic screen paint has evenly distributed light diffusion agent, after the paint forms a film, the light diffusion agent is balanced, the phenomenon of gathering in the screen coating does not occur easily andleak holes do not appear easily; the image is clear and lifelike, and the imaging coefficient is high; and the paint can be applied to rear projection screens, and the imaging definition is consistentwith that of an orthographic projection screen.

The invention discloses a focusing method, device and equipment and a readable storage medium, and the method comprises the steps: segmenting an image into N image blocks, and determining a first image block; the first image block is an image block except a second image block, and the second image block is an image block of which the brightness sum is greater than a first threshold value in a connected domain of the maximum brightness pixel point; segmenting the edge image into N edge image blocks, and determining a first edge image block; the first edge image block is an edge image block of which the edge value variation of the corresponding edge image block in the previous edge image is not greater than a second threshold value; calculating a focusing evaluation value of the edge image according to the edge value and the number of the second edge image blocks, and focusing according to the focusing evaluation value; the second edge image block is an edge image block which is the first image block and the first edge image block at the same time. According to the technical scheme disclosed by the invention, the focusing evaluation value is calculated by utilizing the edge image block which does not have strong light and does not have sudden entering and exiting of an object, so that the accuracy of automatic focusing is improved.

The embodiment of the invention discloses a picture definition calibration method. The resolution of the four corners of a taken picture is obtained, and the taken picture is a test picture of a standard resolution card; when the values of the resolution of arbitrary two corners in the four corners of the taken picture are different, according to the resolution of the four corners of the taken picture, the central point of the taken picture is moved; the radial length value from the moved central point of the taken picture to each pixel point of the taken picture is calculated; according to the corresponding radial length value, the de-noise processing intensity value of each pixel point of the taken picture is determined, and therefore, according to the de-noise processing intensity values, de-noise processing is conducted on the taken picture. The invention further discloses a terminal and a computer-readable storage medium which can improve the marginal definition of the picture toachieve the uniformity of the picture marginal definition.

The invention provides an augmented reality display optical module and system. The augmented reality display system includes an augmented reality display optical module and an image display device. The augmented reality display optical module includes an electric control liquid crystal polarizing element, a polarization splitting element, a first reflective amplifying element, a phase retarder, afirst reflective element, a second reflective element, a third reflective element and a second reflective amplifying element. The image display device sequentially outputs a first sub-image ray and asecond sub-image ray of an image to be displayed, and a first to-be-displayed sub-image and a second to-be-displayed sub-image formed by a first reflection amplifying element and a second reflection amplifying element through reflection can be stitched into the image to be displayed for a user visually. The augmented reality display optical module and system have the advantages of large field of view and high resolution, and are small in size compared with an augmented reality display optical module and system with a conventional display optical module.