381results about How to "Improve the projection effect" patented technology

The invention relates to the technical field of teaching equipment, and discloses a self-dust-removing projection screen for teaching, which includes a mounting frame, grooves are opened on both sides of the inner cavity of the mounting frame, and the first drive is fixedly installed in the groove on the right side. Motor, the output shaft of the first driving motor is fixedly installed with a winding shaft, the side of the winding shaft away from the first driving motor is fixedly installed with a winding shaft seat located in the groove on the left side, and the inside of the winding shaft is provided with a winding slot, and a projection screen with one end extending to the bottom of the installation frame is fixedly installed in the winding slot. The projection screen for self-cleaning teaching uses a second drive motor to fix the projection screen in the dust removal tank, and the second drive motor drives the dust removal shaft to rotate in the dust removal chamber, so that the dust removal roller drives the cleaning brush on the cleaning cloth to rotate , In the process of rolling and unfolding the projection screen, the dust can be automatically removed to ensure a good projection effect of the projection screen.

The invention discloses a method for automatically adjusting the image projected by a projector. The method comprises the following steps: setting a recognizable imaging mark on a screen; extracting a preset front sight image through a menu; photographing images of the screen by a camera to recognize the positions of the mark and the preset front sight on the screen; determining whether the projected images of the mark and the preset front sight are superposed; calculating the relative coordinates of the preset front sight projected image and the mark; and adjusting the position of the projector. The invention also discloses a device for realizing the above adjustment method. The device comprises a projection module, the screen, the preset front sight, the camera, an image recognition processing module and a projector position adjusting module, wherein the camera is located on the projection module and is sequentially connected with the image recognition processing module and the projector position adjusting module. The method and the device can achieve full-automatic adjustment of trapeziform distortion of the images projected by the projector so as to save the fine adjustment time of users.

The invention discloses a structured light projection apparatus. The structured light projection apparatus comprises a light source assembly, a diffractive optical element and a collimating lens system; a light beam from a light source is collimated by the collimating lens system to illuminate the diffractive optical element; the projection apparatus also comprises a first driving part, wherein the first driving part drives the light source assembly or/and the diffractive optical element to enable the light beam and the diffractive optical element to perform relative motion to form a variableworking region on the diffractive optical element; and the variable working region performs diffraction on the light beam to project a variable structured optical pattern. Meanwhile, the invention discloses a depth motor adopting the structured light projection apparatus; and by virtue of the depth camera, the imaging quality of a depth image can be improved, and usage scenarios can be increased.In addition, the invention discloses a depth image imaging method based on the depth camera, wherein the method is high in imaging quality.

The invention relates to a notebook computer provided with a miniature projector, which comprises a host computer, a display screen and the miniature projector, wherein the display screen is arranged on the host computer and is electrically connected with the host computer; and the miniature projector is arranged on the display screen, positioned on the top of the display screen, and projects an image signal when the display screen is positioned on the front of the host computer. Therefore, the notebook computer provided with the miniature projector can increase the use convenience.

The invention discloses a display control method and electronic equipment. The display control method is applied to the electronic equipment with a projection unit. The method includes processing an acquired first image corresponding to the first projection region, and determining a projection plane region from the projection region; acquiring at least one projection parameter used for adjusting the projection unit according to the projection plane region; adjusting the projection unit according to the at least one projection parameter, and allowing the projection unit to output projection images in the projection plane region.

The embodiment of the invention provides a projection method and an electronic device. The electronic device comprises a projection module and an image acquisition module. The method comprises the following steps: image information of a to-be-projected surface acquired through the image acquisition module is obtained; analysis is carried out on the image information to obtain parameter information of the to-be-projected surface in the image information; according to the parameter information, first to-be-projected information is adjusted, so that second to-be-projected information is generated; and the second to-be-projected information is projected on the to-be-projected surface through the projection module, so that a projector can carry out adjusting on a projection image according to the parameter information of the to-be-projected surface, and accordingly the projector can carry out projection on various projection surfaces, and the sharpness of the projection images and the projection efficiency of the projector are improved.

The embodiment of the invention provides a multimedia data transmission method based on a mobile terminal, and the mobile terminal. The mobile terminal at least comprises an MHL interface, a WiHD connection unit and a Miracast connection unit. The method comprises the steps of when detecting the triggering operation of the user aiming at multimedia data currently displayed by the mobile terminal, deciding a target connection unit from the MHL interface and/or the WiHD connection unit and/or the Miracast connection unit; and transmitting the multimedia data into a display device by a target connection unit, wherein the display device is used for displaying the multimedia data. According to the multimedia data transmission method based on the mobile terminal, the user can achieve the best screen projection effect under the current network environment, and the user experience is enhanced.

A projection optical system is constituted by, in order from the reduction side, a first optical system constituted by a plurality of lenses for forming an image displayed by image display elements as an intermediate image, and a second optical system constituted by a plurality of lenses for forming the intermediate image on a magnification side conjugate plane. Conditional Formula (1) below is satisfied.

8.20<Imφ·f2/f²<20.00  (1)

The invention relates to an anti-dust device of a projector. The projector comprises a first elastic fastening hood, a second elastic fastening hood, an elastic connecting piece, a first elastic sealing piece and a second elastic sealing piece, wherein the first elastic fastening hood is tightly sheathed on a shell of the projector, and the second elastic fastening hood is tightly sheathed on a lens cone of a projection lens; one end of the first elastic sealing piece is connected with the first elastic fastening hood, the other end of the first elastic sealing piece is connected with the elastic connecting piece, and a plurality of first wrinkles axially distributed along the projection lens are formed on the first elastic sealing piece; one end of the second elastic sealing piece is connected with the second elastic fastening hood, the other end of the second elastic sealing piece is connected with one side, far away from the first elastic sealing piece, of the elastic connecting piece, and a plurality of second wrinkles axially distributed along the projection lens are formed on the second elastic sealing piece. The anti-dust device of the projector can be used for better sealing the interval between the projection lens and a lens hole so as to effectively prevent dust, and can not generate any applied force to the projection lens, so as to ensure that the projection effect of the projector is better.

The method of manufacturing a semiconductor memory includes a process of forming a projection by performing an insulator forming process on the exposed side surface of a reactive conductive material and a non-reactive conductive material that are stacked above a substrate so as to change a predetermined length of the side surface of the reactive conductive material into an insulator, and thereby causing the side surface of the non-reactive conductive material to project outward from the side surface of the reactive its conductive material. The insulator forming process is an oxidation process or a nitridation process, the reactive conductive material is a material that reacts chemically and changes into the insulator in the oxidation process or nitridation process, and the non-reactive conductive material is a material that does not change into the insulator in the oxidation process or nitridation process.

The invention discloses a projected image real-time correction method based on a planar screen. The method includes the steps: S1, projecting an original image on the planar screen; S2, capturing a projected image by a monocular camera; S3, subjecting the projected image captured by the monocular camera to three-dimensional reconstruction; S4, judging whether the image is deformed or not; S5, if the image is not deformed, directly displaying the original image without processing the image; if the image is deformed, obtaining a corrected original image through an image correction procedure, and projecting the corrected original image onto the screen to realize normality in image display; on the basis of real-time correction, if the image correction procedure is not terminated, repeating the above steps until real-time correction of the image is realized. By the projected image real-time correction method based on the planar screen, receiving of the image information captured by the camera, analyzing of the image information and processing and displaying of the image are realized.

The invention discloses a projection method used for improving projection effects. The projection method comprises the steps of: when a projection content needs to be projected in a projection region, collecting parameter information having relationship with the projection effect of the corresponding projection region; judging if adjustment for the projection content is necessary based on the parameter information; and adjusting the projection content based on the parameter information when the adjustment for the projection content is necessary, and obtaining the adjusted projection content; and projecting the adjusted projection content within the projection region. The invention also discloses a device for realizing the method.

A notebook with a mini-projector is disclosed. The notebook with a mini-projector includes a mainframe, a display and a mini-projector. The display is arranged on and is electrically connected with the mainframe while the mini-projector is disposed on top of the display. When the display is standing over the mainframe, an image is projected so that the convenience of use is enhanced.

The invention provides a screen projection method, a screen projection device, a computer readable storage medium, projected screen equipment and screen projection equipment, and relates to the technical field of image processing. The screen projection method comprises the steps of performing super-resolution reconstruction on a to-be-projected screen image to obtain a target image; and sending the target image to screen projection equipment to enable the screen projection equipment to display the target image. According to the invention, the resolution of the image can be improved, and the screen projection device can display a clear target image, thereby solving a problem that the screen projection display content is liable to be blurred in the related technologies, and improving the screen projection effect and the watching experience of a user.

The invention relates to the field of automobile electronics, and discloses an augmented virtual reality projection method and system based on sight tracking. The augmented virtual reality projectionmethod based on sight tracking is applied to an automobile, the automobile adopts an AR-HUD technology, and the method comprises; acquiring a video image in the automobile; detecting a face image of atarget user in the video image; determining a reference position coordinate and a following position coordinate according to the face image; calculating an included angle between the sight line of the target user and the horizontal direction of the automobile according to the reference position coordinate and the following position coordinate; and adjusting the projection angle of the virtual camera corresponding to the AR scene according to the included angle. According to the embodiment of the invention, the augmented virtual reality projection effect is improved.

The invention is suitable for the technical filed of optics and provides a laser light source collimating device, a collimating device array, a lighting system and projection equipment. The collimating device comprises an inner sleeve and an outer sleeve, wherein both ends of the inner sleeve are located in the outer sleeve; one end of the outer sleeve is provided with a first opening and the other end of the outer sleeve is provided with a first flange extending inwards; the center axes of the first flange and the first opening are overlapped; one end (close to the first opening) of the inner sleeve is provided with a second opening and the other end of the inner sleeve is provided with a second flange extending inwards; and the upper surface of the second flange presses against the lower surface of the first flange and the second flange is bulged inwards relative to the first flange so as to form a step structure. According to the laser light source collimating device, the collimating device array, the lighting system and the projection equipment, the spacing design and the concentricity design of a laser and a collimating lens are respectively realized through two independent sleeves; the inner and outer sleeves can be individually manufactured thus being convenient to process; and therefore, the collimating device is convenient to process, high in processing accuracy, suitable for batch production and relatively good in laser collimating effect at the same time.

The embodiment of the invention discloses an interactive video projection method and device, equipment and a storage medium. The method comprises the steps of determining the initial position postureof the camera in the virtual scene according to the video frame shot by the camera; rendering the three-dimensional map based on the initial position posture; obtaining a two-dimensional picture corresponding to the shooting range of the camera in the initial position posture; performing feature matching on the two-dimensional picture and a video frame shot by a camera; determining three-dimensional feature points, corresponding to the two-dimensional feature points on the video frame, in the three-dimensional map after matching is completed; determining a camera pose matrix, focal length information and/or distortion parameters through a pose solving algorithm; and setting a camera in the virtual scene according to the above information, and adding the video frame into the rendering pipeline for video projection, thereby realizing semi-automatic interactive rapid video projection mapping without manually and accurately configuring camera parameters by a worker, and improving video projection efficiency.

The invention discloses a portable electronic device, which comprises a machine body, a screen, a projection module and a knob, wherein the machine body is provided with two shell walls which are adjacently connected with each other; each shell wall is provided with a projection window; the screen is pivoted on the machine body to make the screen rotate relative to the machine body and selectively attached to the machine body or form an included angle with the machine body; the projection module is pivoted in the machine body and provided with a projection lens; the knob is pivoted on the bearing surface of the machine body and passes through the machine body and is connected with the projection module; and when the knob rotates, the projection module synchronously rotates and aligns the projection lens with one of two projection windows.

The invention relates to a fabrication method of a seamless rear projection spherical screen and a device thereof. The fabrication method is characterized in that a reaction-type resin is injected into a hollow die by a double-rotation forming method so that the reaction-type resin can react and be cured on the inner side surface of a spherical die to form a base; and an optical projector is fabricated on the base by the same method. The method and the device can be used for fabricating the seamless rear projection spherical screen by simple operation, and the products have good uniformity.

A projector includes a light source module, an optical engine, a light valve and a projecting lens. The light source module includes light sources, optical fibers and a light integration rod. Each of the light sources provides an illumination sub-beam. Each of the illumination sub-beams transmits to the light integration rod through the corresponding optical fiber, and passes through the light integration rod and emits out to form a first illumination beam. The optical engine includes a phosphor wheel located at a transmission path of the first illumination beam and converting the first illumination beam into a second illumination beam. The light valve is located at a transmission path of the second illumination beam and converts the second illumination beam into an image beam. The projecting lens is located at a transmission path of the image beam and projects the image beam out of the projector.

The invention relates to a large-wall stereographic projection method and solves the problems that the prior wall stereographic projection cannot be used to produce animations according to the color and material of buildings and cutting of rendered video requires a large amount of data to be processed and longtime processing. A building is subjected to photometry so that wall parameters are acquired to allow for production of animations; color and light is reasonably used during the process; excellent projection is achieved. Animations are synthesized by cutting an image sequence and allowing multiple computers to operate at the same time, so that efficiency of animation production can be improved greatly.

The invention relates to an image fusion method for a dome screen system. The image fusion method for a dome screen system is characterized by determining the projection area of each projector by means of a mesh model of the dome screen body so as to enable each projector to have adjustability for the projection position; performing edge fusion on each projection area by means of polar coordinatesgeometrical correction processing, so as to enable the projection area image at different position and in different size to achieve the effect of accurate splicing; and respectively performing colorcalibration of the projectors and fusion band blanking operation of projection images by means of unified color processing and light leakage compensation processing, thus effectively avoiding color variation and luminance variation between each edge fusion image. By means of the steps provided by the image fusion method for a dome screen system, the stereo projection image on the dome screen bodycan achieve the display effect of complete frames, unified color and suitable luminance, and comfortable and perfect film watching experience can be brought to spectators. The image fusion device employing the image fusion method for a dome screen system can generate a standard fusion image with better display effect, and the dome screen system employing the image fusion method can have excellentprojection effect and can improve the film watching experience of spectators.