42results about How to "Suppress shadows" patented technology

This invention is applied to a projection video display apparatus which causes a DMA to modulate light from a light source having a plurality of two-dimensionally arrayed LEDs in accordance with a video signal and projects the modulated video light onto a screen via a projection optical lens. The two-dimensionally arrayed LEDs are sequentially turned off from outside to inside when a drive device for ON/OFF-driving the LEDs of the light source is designated to darken the light source. Alternatively, the two-dimensionally arrayed light-emitting elements are sequentially turned on from inside to outside when the drive device is designated to brighten the light source.

In an organic EL display device, a resistance of a cathode electrode of OLEDs is substantially reduced while maintaining a higher opening ratio of pixels as an entire display area. A reference power supply line is formed on a glass substrate, and receives a reference potential for driving the OLED. The OLED is formed on the glass substrate where the reference power supply line is formed, and has a structure in which a lower electrode, an organic material layer, and an upper electrode that is a cathode electrode common to plural pixels are laminated on each other in the order from the bottom. In some of the plural pixels, a cathode contact that penetrates through the organic material layer, and electrically connects the upper electrode to the reference power supply line is formed within an opening area corresponding to a W sub-pixel.

An image sensing apparatus includes an image sensing device having a plurality of pixels, a smoothing unit that smoothes a first dark image signal acquired with the image sensing device shielded from light; a subtraction unit that subtracts a second dark image signal from the first dark image signal; an extraction unit that extracts, as a defective pixel of the image sensing device, a pixel of which an obtained difference is outside a preset range; and a correction unit that corrects, out of subject image signals output from the image sensing device, an image signal of the defective pixel extracted by the extracting unit, using an image signal of a pixel peripheral to the defective pixel.

An image in which a shade of a driver's face is certainly suppressed is to be obtained, while suppressing increases in a size and an electric power consumption of an illumination. An illumination pulse-lights an illumination light which is an infrared light whose peak wavelength is 940 nm, under a control of a synchronous control section. The illumination light is irradiated to a driver through a polarizing filter and a visible light interruption filter. Reflex lights of the illumination light and a disturbance light, which were reflected by the driver, enter to an infrared BPF, in which a center wavelength is 940 nm, through the visible light interruption filter, a polarizing filter 34 and an optical lens. An image pickup element image-picks-up a light which transmitted through the infrared BPF. A synchronous control section controls such that a lit term of the illumination synchronizes with an exposure time of the image pickup element. The present invention can be applied, e.g., to a monitoring device of the driver.

A developing apparatus includes: an agitating chamber agitating a developer; a developing chamber provided with an inlet to which the developer is supplied from the agitating chamber and an outlet from which the developer is returned to the agitating chamber; a developer carrying member; a rotatable developer supplying member supplying the developer to the developer carrying member; a developer conveying member, provided above the center of rotation of the developer supplying member in the developing chamber, for conveying the developer in a longitudinal direction of the developer carrying member, wherein, in a vertical cross-sectional area of a region vertically above the center of rotation of the developer supplying member of the developing chamber, excluding a developer conveying region by the developer conveying member, a cross-sectional area S1 upstream in the developer conveying direction and a cross-sectional area S2 downstream in the developer conveying direction satisfy a relationship of S1<S2.

In a top emission type organic EL display device, brightness gradient in a screen is reduced while keeping a screen brightness. A reflection film is formed under a lower electrode and the light from an organic EL layer is emitted through an upper electrode. Light absorption of the upper electrode is larger on the side of a shorter wavelength. When a film thickness of the upper electrode is enlarged in order to reduce the brightness gradient in a screen, the film thicknesses of the upper electrodes for a red pixel and a green pixel are enlarged without enlarging the film thickness of the upper electrode for a blue pixel. This makes it possible to reduce the brightness gradient as well as to suppress the light absorption of the upper electrode.

The invention discloses a method for processing a video image under an intelligent transportation monitoring scene, which comprises the following steps: A. determining a lane detection region and determining the lane direction by analyzing the running track of a moving target in the lane detection region in continuous M frames of video images; B. respectively determining whether shadows exist in each later frame of the video image according to the lane direction and executing step C if determining that the shadows exist in continuous N frames of the video images; and C. respectively inhibiting the shadows in each later frame of the video image according to a hue, saturation and value (HSV) color model, determining whether the contact ratio of foreground images in each frame of the video image before and after the inhibition meets the requirements, and repeatedly executing step B if continuous L frames meet the requirements, wherein, M, N and L are positive integers which are greater than 1. The invention further discloses a device for processing a video image under the intelligent transportation monitoring scene. The method and the device of the invention can effectively inhibit the shadows in the video images.

The invention relates to a maximum entropy-based road shadow suppression method and belongs to the technical field of image processing. The maximum entropy-based road shadow suppression method is used for reducing interference of road shadow during road detection. For solving the problem that similar methods are not thorough in shadow suppression and are prone to eliminating effective road areas, the technical scheme of the maximum entropy-based road shadow suppression method comprises, firstly, transferring a colorful image into an HSV (hue, saturation and value) color space, and extracting the HSV feature (log (H/S), log (V/S)) of every pixel point; secondly, projecting the HSV features of all the pixel points in the HSV image into a one-dimensional space, calculating the entropy values of the HSV features in the one-dimensional space, changing the projection angle a to obtain the entropy values corresponding to different projection angles, and determining the projection angle am corresponding to the maximum entropy value; lastly, reconstructing the HSV image on the basis of the projection angle am, performing binarization and hole filling sequentially on the reconstructed image to obtain a shadow-suppressed road image. The maximum entropy-based road shadow suppression method is efficient, feasible and high in adaptability to different road conditions.

A textile-material monitoring device (11) that can improve accuracy in detection of a foreign matter by reducing shadows during the detection and detect a thickness irregularity of a textile material (10) favorably is provided. A clearer of the textile-material monitoring includes a light source unit (36), a light receiving unit (37) that doubles as a transmitted-light receiving unit and a reflected-light receiving unit, and a diffuser member (38). The light receiving unit (37) receives, of light emitted from the light source unit (36) toward a running spun yarn, light transmitted through the spun yarn and light reflected from the same. The diffuser member (38) arranged between the light source unit. (36) and the spun yarn (10) diffuses the light emitted from the light source unit (36) such that a degree of light diffusion in a plane orthogonal to a running direction of the spun yarn is greater than a degree of light diffusion in a plane parallel to the running direction.

The vapor deposition source includes a containing unit configured to contain vapor deposition particles and a plurality of nozzles aligned in a line form along an X axis direction, and in the vapor deposition source, the plurality of nozzles at an end portion in the X axis direction of the containing unit protrude in an oblique direction toward the end portion in the X axis direction, arrangement density of nozzles provided at the end portion in the X axis direction of the containing unit is higher than arrangement density of nozzles provided at a center portion of the containing unit, and a line connecting upper end faces of the nozzles adjacent to each other at the end portion in the X axis direction of the containing unit is linearly provided.

The invention relates to a light source unit and an illumination device. The light source unit includes a substrate and a reflective body. The substrate includes a plurality of light-emitting elements mounted thereon. The reflective body includes a plurality of incident openings each corresponding to one of the plurality of light-emitting elements, an output opening to which light that has passed through the incident opening is output, and a plurality of reflective surfaces that expand from the incident opening toward the output opening. Reflective surfaces included in the plurality of reflective surfaces and positioned on an outermost side are provided to be adjacent to one another, and an angle is set so as to prevent reflective light of light emitted from the light-emitting elements from traveling toward an outer side in a reflective surface formed on the outer side. The invention also provides the illumination device using the light source unit.

The present invention discloses an improved method of LED reflector manufacturing process where the method includes providing a substrate, wherein said substrate comprises a reflector unit, and a Light Emitting Diode; providing a shield member with ferromagnetic property; placing said shield member over the desired area of over the substrate; providing a magnet where said shield member is attracted to; placing said magnet immediately below the substrate wherein said magnet is capable of immobilizing the shield member over the substrate; performing a vacuum deposition coating; and removing the magnet and the shield member.

A static eliminating device includes: a housing; a substrate mounted to the housing; a light-emitting part mounted on a mounting surface of the substrate; a partition member connected to the housing to cover the substrate and the light-emitting part and face a portion of the housing to which the substrate and the light-emitting part are mounted so that an opening facing the surface of the image carrier is formed in a light-emitting region across which light is delivered from the light-emitting part to the surface of the image carrier; and a restricting protrusion abutting at a distal end thereof against the partition member to support the partition member and restricting the position of the partition member to ensure the formation of the opening. A distal side portion of the restricting protrusion located within the light-emitting region has a tapered shape narrowing with approach toward the partition member.

The invention discloses a lighting device, image reading apparatus, and image forming apparatus, which can effectively utilize a light quantity of a point source when a point source with little light quantity is used as a light source of a reading device. A lighting system is provided with a point source 32 emitting light to the surface of a document which is located on contact glass 12 and becomes a reading object, and a condensing body 33 which is arranged forward in the direction of emission of light emitted from the point source 32 and which condenses light emitted from the point source 32 within a reading width in the direction of a sub-scanning direction at the time of document reading. The condensing body 33 is arranged in a direction in which angles of all lights passing through the condensing body 33 are less than a critical angle '[theta]' totally reflected by the contact glass 12. Thus, all of the lights emitted from the point source 32 through the condensing body 33 are irradiated to the surface of the document without total reflection at the contact glass 12, thereby enabling all of the lights emitted from the point source 32 to be effectively used for lighting the document surface.