79 results about "Occlusion effect" patented technology

A wireless networked device incorporating a display, a video camera and a geo-location system receives geo-located data messages from a server system. Messages can be viewed by panning the device, revealing the message's real world location as icons and text overlaid on top of the camera input on the display. The user can reply to the message from her location, add data to an existing message at its original location, send new messages to other users of the system or place a message at a location for other users. World Wide Web geo-located data can be explored using the system's user interface as a browser. The server system uses the physical location of the receiving device to limit messages and data sent to each device according to range and filtering criteria, and can determine line of sight between the device and each actual message to simulate occlusion effects.

An acoustic coupler adapted for use with an intracanal receiver module can be deeply inserted into the ear canal of the user while making minimal contact with the walls of the ear canal. The minimal contact feature of the invention allows the acoustic coupler to seal the ear canal acoustically and anchor a hearing device at an optimal depth within the ear canal, while maximizing the user's comfort. The acoustic coupler is manufactured from a soft, pliable elastomer that allows it to conform readily to the shape of the ear canal. The acoustic coupler incorporates structural supports that allow the coupler to maintain an acoustical seal and withstand the inward pressure of the ear canal wall while making minimal contact with the ear canal. The invention incorporates a cerumen-protecting feature that prevents damage to a hearing device from infiltration of earwax into the sound port of the receiver. A vent pathway for control of occlusion effects is also provided. A user-friendly, attachment mechanism incorporating a snap-on, twist-off feature allows the acoustic coupler to concentrically surround the receiver module within the ear canal in a space-efficient manner.

An occluding hearing aid having anti-occlusion effect techniques combined with at least one improvement which, in the preferred embodiment, includes enhancement of acoustic output in the lower-midrange and bass frequency regions, typically between substantially 40 and 500 Hz, which regions are crucial for natural reproduction of multimedia sound and music but are not optimally processed, and generally not provided at all, in prior art hearing aids in order to avoid exacerbation of the occlusion effect. In specific embodiments, the hearing aid of the present invention includes primary or first microphone exposed to external sound plus a secondary or second microphone exposed to sound within an ear canal, in which a signal produced by the secondary microphone is applied as negative feedback to an input of a non-gain controlling signal process and amplifier driving a hearing aid receiver (transducer), whereby, it has been determined by the present inventor, the occlusion effect may be substantially canceled. The hearing aid further comprises at least one of ten combinational improvements each providing substantial performance benefits over known techniques and devices.

The invention relates to a virtual reality occlusion handling method, based on a virtual model pretreatment, in augmented reality system. The method comprises the steps of utilizing a depth camera KINECT to obtain a color image and a gray level image representing depth information; converting the color image into a bitmap image capable of being identified and tracked by an augmented reality occlusion system and registering a virtual model in a three-dimension mode; combining the three-dimensional registration position of the virtual model and the self depth of the virtual model to conduct threshold treatment on the gray level image and extracting the peripheral contour of a real object; in the render scene of the virtual model, registering a contour coordinate system in a three-dimensional mode; switching a two-dimensional outline vertex coordinate system into a three-dimensional coordinate corresponding to the actual size, drawing in the contour coordinate system, and using a re-drawn contour as a three-dimensional model to shield the virtual model; combining the color image and the treated virtual model, filling a real object image into an outline internal area, namely, the occlusion part of the virtual model, so as to obtain a virtual reality occlusion effect. According to the method, pre-modeling and comparing the depth information of the virtual model pixel by pixel are not needed, so that the method is suitable for environments with unknown changes and can meet instantaneity requirements.

A technique is provided for visualizing a volume of interest, such as may be acquired by a tomosynthesis imaging system. The technique provides for the use of one or more weighting functions, such as depth-dependent weighting functions, in the determination of pixel values in a volume rendering. The weighting functions may modify, for example, an intensity determination for a pixel, either directly or by modifying other contributing functions, such as for determining occlusion effects. The volume rendering may then be displayed for review by a technologist or clinician.

A hearing aid (100) comprises at least one first microphone (10) generating a first input signal from sounds external to a user of the hearing aid, signal processing means, a receiver (30) and, a second microphone (40) generating a second input signal from sounds in the occluded ear of the user. In a measurement mode the signal processing means produces an occlusion effect value or directly transmitted sound value from the difference between the sound levels of the second and the first input signals generated both at the same time while the receiver is silent. The invention further provides a system and a method for determining an occlusion effect and a directly transmitted sound value.

At least one exemplary embodiment is directed to a system configured to occlude an ear canal. The system comprises a support structure, an expandable device, a housing, a resilient reservoir, and a threaded device. Resilient reservoir resides within housing and is filled with a medium. The threaded device couples to a threaded region of support structure. Threaded device fits in an opening of housing. Rotating threaded device reduces an interior volume of housing thereby transferring the medium from resilient reservoir to expandable device. Threaded device is rotated to displace sufficient medium within resilient reservoir to expand expandable device to occlude the ear canal. Resilient reservoir is passively filled when expandable device is in an un-expanded state.

A hearing aid (1) adapted for operation in a sound amplification mode and for operation in an occlusion measurement mode, has a microphone (10) adapted for transforming an acoustic sound level external to a hearing aid users ear canal (4) into a first electrical signal which is guided to an ND converter forming a first digitized electrical signal. The hearing aid has signal processing means with a filter bank (41, 42) with means for splitting an electrical signal into frequency bands, and a receiver (20) adapted for generating acoustic sounds in the ear canal of a user when in said amplification mode, and for transforming the acoustic sound level in the ear canal into a second electrical signal, when in occlusion measurement mode. The invention also provides a system and a method for measuring the occlusion effect

The invention discloses an occlusion culling and acceleration method for drawing an outdoor ground surface in real time based on a depth map. The method comprises the following steps: drawing a current scene and storing the depth value of the scene to a piece of depth map through an acceleration algorithm; and carrying out rasterization on a bounding box of a model to be detected and judging the value of pixels in the bounding box of the model to be detected and the magnitude of the depth value in the previous step, and thus the result of occlusion culling is obtained. A portion sight line occlusion body is arranged in a scene editor in an engine, then, all objects in the scene are drawn; the least depth value of the sight line occlusion body in the current scene is recorded; and the depth value of the bounding box of the object to be detected is compared with the least depth value obtained by scene drawing, and visibility of the object is obtained. The purposes of good occlusion effect and real-time drawing can be realized.

The invention relates to a construction process of a concrete form water-stopping occlusion pile. The construction process comprises the following steps: constructing a plain concrete pile, and using a special occlusion form to form cambered grooves; and constructing a reinforced concrete pile, wherein concrete automatically flows into the cambered grooves of the plain concrete pile at the moment, thereby realizing the occlusion of the plain concrete pile and the reinforced concrete pile to form a curtain so as to achieve the purposes of water stopping and water retaining. Compared with the prior art, the invention has the advantages that the construction cost is greatly saved, the construction cycle is shortened and the water retaining quality is improved because the reinforced concrete pile and the plain concrete pile are matched for use; based on the occlusion effect of the cambered surfaces of the concrete, good occlusion and water-stopping effects between new and old concrete surfaces are achieved, and the construction quality is easy to control; and in addition, the application range is wide, different drilling machines can be used for forming pores in different water-bearing strata, and the predetermined water-stopping effect can be achieved as long as the pore forming quality meets the requirements of the specification.

An in-ear monitor system facilitates stereo depth perception using microphones at each ear, minimizes occlusion effects, and provides a digital platform for both audio digital signal processing and wireless transmission.

According to the present invention, a hearing aid is provided having a housing with an open canal section that is adapted for fitting in the ear canal of a user and having a short vent the longitudinal extension of which is shorter than the longitudinal extension of the open canal section, and an output port for emission of sound towards the eardrum of the user when inserted in the ear canal, and a closed pinna section for enclosing hearing aid components and that is attached to the open canal section and adapted to be positioned outside the ear canal in front of the pinna when the open canal section is inserted in the ear canal, the short vent substantially preventing the occlusion effect.

The invention discloses a system, a device and a method for implementing video monitoring zone occlusion, and a device for presenting the video monitoring zone occlusion. The invention determines each edge point position of the occlusion zone in an image according to a simulating lens angle and/or focal distance, and the occlusion zone shape in a pre-setting image, so as to realize a dynamic regulation to a proportion of the occlusion zone in the simulating lens visual field; then generates corresponding occlusion graphs according to each edge point position of the occlusion zone and overlays the graphs in the image, and enables the occlusion zone of the image to be screened by the occlusion graphs. Moreover, a multimedia chip also generates corresponding occlusion graphs according to colors expressing the occlusion graphs, and/or transparency, and/or fuzzification degree, and/or word collocation information displayed in the occlusion zone, so as to make the occlusion zone of the image to implement various occlusion effects.

The present invention relates to a new type of hearing device housing having an open canal section that is adapted for fitting in the ear canal of a wearer and having a short vent, the longitudinal extension of which is shorter than the longitudinal extension of the open canal section, and an output port for emission of sound towards the eardrum of the wearer when inserted in the ear canal, and an outer ear section for accommodation of electronic components and being attached to the canal section and adapted for positioning in front of the ear during use, the short vent reducing the occlusion effect, wherein the canal section comprises an open and flexible earpiece manufactured in standard sizes. The hearing device may be a hearing aid, a headset, a headphone, etc. Unlike a conventional BTE (Behind-The-Ear) hearing aid having a housing to be positioned behind the ear, the housing of the hearing device according to the present invention is positioned in front of the ear, i.e. in front of the pinna. The positioning of the hearing device is simple since positioning of the outer ear section is automatically performed together with the positioning of the open canal section in the ear canal of the wearer.

At least one exemplary embodiment is directed to a sound isolation device comprising: an expandable element; and an insertion element, where the expandable element is operatively attached to the insertion element, where the expandable element includes an expanding medium, where the pressure of the expanding medium is varied to vary sound isolation across the expandable element.

A method is described for reduction of occlusion effects in an acoustic appliance which closes an auditory channel, wherein an audio signal in the transmission path of the acoustic appliance is processed by a signal processing unit and is emitted via an output transducer, which is arranged in the auditory channel, as an acoustic signal. A resultant sound signal is then detected by an auditory channel microphone and is supplied to a variable loop filter, which is arranged in a feedback loop of an occlusion reduction unit for the acoustic appliance. The output signal from the loop filter is injected into the transmission path of the audio signal. The occlusion reduction unit is in this case controlled adaptively, with at least one signal from the transmission path of the audio signal and/or from the feedback loop being used to control the loop filter for the occlusion reduction unit.

A tinnitus treatment device includes a sound generation device and a receiver unit connected to the sound generation device. The receiver unit is positioned in an open-ear configuration within the ear canal of a user and is dimensioned so as to reduce insertion loss and/or occlusion effects. The sound generation device is located in a housing positioned behind the user's ear.

The invention discloses a gravity type cement-sand-gravel dam and a construction method thereof. The cement-sand-gravel dam comprises an upstream dam surface which is vertically arranged; key walls are arranged at the positions of a dam toe and a dam heel; the contact surface of a dam body and an overflow surface is of a step-shaped structure; the upstream dam surface, the dam toe and the dam heelare composed of slurry-rich cement-sand-gravel; the dam body is composed of cement-sand-gravel; and the overflow surface is provided with a reinforced concrete layer. According to the gravity type cement-sand-gravel dam and the construction method thereof, the contact surface of the dam body and the overflow surface is of the step-shaped structure, so that the occlusion effect between two materials can be improved, and the phenomenon that the dam body is damaged along the contact surface under the action of dynamic water pressure can be avoided; and the earth volume of the dam body can be decreased, direct discharge can be realized, and a discharge facility is not required to be additionally constructed.

The invention relates to a television-program producing-broadcasting technique in the field of radio and television, in particular to a method for realizing unlimited blue-box function used in virtualstudio systems. The method is characterized in that surface sheet structures are generated in a complementary-set region of a blue box to form a geometric body; each surface of the geometric body isa plane; every plane is taken as a mask; filled signals are background signals; when a camera is swung out of a blue-box region, the planes taken as masks are rendered in an Alpha cache; meanwhile, according to foreground, background and occlusion relation, three-dimensional objects used to occlude the foreground are extracted to be rendered in the Alpha cache; rendered images are synthesized to be video signals output to a color key through an Alpha channel; and the color key serving as a foreign key is synthesized with the background and the foreground in real time to generate video images reflecting three-dimensional effects. The method during application can fine adjust the size of blue boxes in order to be matched with different size of the blue boxes to realize final occlusion effects, thereby perfectly fusing the foreground with the background.

The invention discloses a sampling device for water conservancy sediment research and analysis, which comprises a cylinder cover, a glass tube container, a cylinder body, a liquid level sensor, a water inlet hole, a round rod, a pull rope, an internal thread connection sleeve, a control rod, Grip rod, T-bar, display screen, round tube, return spring, tube cover, filter housing, through hole and round baffle. The invention is simple in structure, light in use, convenient for users to take samples, ensures the quality of sample sampling, and is beneficial for users to accurately analyze the composition content of sediment. The depth data is conducive to the placement of classified samples. The round rod is moved upward by the pull rope, which is conducive to the circular baffle installed at the bottom of the round rod to be close to the top of the inner wall of the cylinder, so as to achieve the effect of sealing the water inlet hole and avoid When the sample is taken out, the sediment with no depth enters the cylinder.