Abstract: Provided is an image processing apparatus which includes a histogram generating unit that generates a histogram representing an appearance frequency distribution of a pixel value of an input image, and a quantization table generating unit that generates a quantization table including table information used to perform transform of a bit depth of the pixel value of the input image and table information used to allocate an effective pixel in which an appearance frequency in the histogram generated by the histogram generating unit is not zero to an index value after bit depth transform so that effective pixels are allocated to index values as equally as possible.

Abstract: According to some aspects, a computer-implemented method of registering a first image and a second image is provided. The method comprises computer-implemented acts of logically dividing the first image into a first plurality of regions, logically dividing the second image into a second plurality of regions, projecting the first plurality of regions and the second plurality of regions into a lower dimensional space using random projections, determining, for each of the projected first plurality of regions, at least one of the projected second plurality of regions that is closest according to first criteria, and determining a transform that brings each of the projected first plurality of regions into a closest correspondence with the respective at least one of the projected second plurality of regions according to second criteria, the transform indicating the registration of the first image and the second image.

Abstract: An apparatus and method detecting an object pose are provided. Key joint data of an object may be extracted, a candidate pose may be generated based on the extracted key joint data, and a most likely pose may be retrieved using a database, based on the generated candidate pose.

Abstract: An image processing device includes a processor; and a memory storing computer readable instructions therein. The computer-readable instructions, when executed by the processor, causes the image processing device to perform: preparing image data representing an image; identifying a first region in the image and a second region disposed inside of the first region; determining an attribute of the first region to be one of a plurality of attributes; and determining, when the attribute of the first region is determined to be the first type attribute, an attribute of the second region by using the attribute of the first region. The plurality of attributes includes a first type attribute indicating one of photo and drawing.

Abstract: Example embodiments disclosed herein relate to feature based image registration. Feature based image registration determines correspondence between image features such as points, lines, and contours to align or register a reference or first image and a target or second image. The examples disclosed herein may be used in mobile devices such as cell phones, personal digital assistants, personal computers, cameras, and video recorders.

Abstract: An image processing device performs: preparing image data representing an image, the image including a target region consisting of a plurality of target pixels, each of the plurality of target pixels having a pixel value; classifying each of a plurality of target pixels as one of an object pixel and a background pixel other than the object pixel, the object pixel constituting an object represented in the target region; determining whether or not the target region satisfies a first condition related to a relationship between the object pixel and the background pixel to make a first determination result; and judging whether or not the target region is a letter region representing at least one letter based on the first determination result.

Abstract: A template includes a frame a and a frame b, in each of which an image is to be inserted. An object introduction degree (OI) is associated with a frame set ab, which is a combination of the frames a and b. For a pair of images arranged with respect to the frame set ab, the object introduction degree (OI), which is associated with the frame set ab, is calculated according to a characteristic value of each of the images in the pair of images. The calculated object introduction degree is used as an evaluation value of an arrangement pattern in which the pair of images is arranged with respect to the frame set ab.

Abstract: Images are searched to locate faces that are the same as a query face. Images that include a face that is the same as the query face may be presented to a user as search result images. Images also may be sorted by the faces included in the images and presented to the user as sorted search result images. The user may provide explicit or implicit feedback regarding the search result images. Additional feedback may be inferred regarding the search result images based on the user-provided feedback, and the results may be updated based on the user-provided and inferred feedback.

Abstract: CPU performs a process to obtain image data, and defines a predetermined range in the obtained image data. Further, CPU extracts outlines of images falling within the predetermined range, and selects a closed line among the extracted outlines. Then, an image processing unit and CPU converts an image surrounded by the selected closed-line into a painterly rendering image.

Abstract: An image processing device includes a processor, and a memory storing computer-readable instructions therein. The computer-readable instructions, when executed by the processor, causes the image processing device to perform: generating edge image data by using the original image data; calculating characteristic values for a plurality of determination regions; and identifying a determination region as a nonuniform region when the characteristic value of the determination region satisfies a prescribed criterion, and the determination region as a uniform region when the characteristic value of the determination region does not satisfy the prescribed criterion. Each of the plurality of determination regions corresponds to one of the characteristic values, represents a part of the edge image, and includes a plurality of pixels, the plurality of determination regions being different from one another, each of the characteristic values characterizing the edge strength of the corresponding determination region.

Abstract: An apparatus, a computer readable medium to instruct a process to implement a method, and a method of reducing blocking artifacts and/or noise in an image that has been compressed by a block-based encoding process. The method includes deblocking the image using overlapped forward directional transforms, the overlapped forward directional transforms including directional selecting to filter across horizontal and vertical boundaries, denoising the image, in one version edge detecting to classify individual pixels as to whether or not they belong to edge features, and generating output pixels by locally adapting to whether the pixels are in block boundaries, and/or include edge features.

Abstract: A system including a planning module configured to generate a transition plan in response to a deviation of the vehicle system from an operating plan. The transition plan designates one or more tractive operations or braking operations to be implemented by the vehicle system to achieve a designated operating parameter prior to an approaching location along the route. A vehicle control module is configured to control operation of the vehicle system according to the transition plan as the vehicle system travels toward the approaching location from a location where the vehicle system deviates from the operating plan. The planning module is configured to generate a prospective plan in response to the deviation. The prospective plan designates one or more tractive operations or braking operations to be implemented by the vehicle system when the vehicle system at least one of moves past the approaching location or completes the transition plan.

Abstract: Disclosed herein is an image processing apparatus, including: a band information acquisition unit configured to acquire band information of each of a plurality of blocks acquired by dividing a screen on the basis of input image data; and a domain separation unit configured to separate a screen into a plurality of types of domains on the basis of the band information of each of the plurality of blocks acquired by the band information acquisition unit. The apparatus further includes a processing force computation block configured to obtain a processing force for each of the plurality of types of screen domains obtained by the domain separation unit; and an image processing block configured to execute predetermined image processing on the input image data for each of the plurality of types of screen domains separated by the domain separation unit with a processing force separated by the processing force computation block.

Abstract: There is provided an image processing method includes: separating an image taken at a predetermined frame rate into a first frame and at least one second frame other than the first frame at intervals of 1/n, where n is an integer of 2 or larger; calculating a low-frequency-component difference between the separated at least one second frame and first frame; performing signal processing designated by a user on the first frame; decompressing, using a low-frequency component in the first frame being subjected to the signal processing and the low-frequency-component difference, a low-frequency component in the at least one second frame being approximately subjected to the signal processing; and decompressing, using the decompressed low-frequency component in the at least one second frame and a high-frequency component therein, the at least one second frame being approximately subjected to the signal processing.

Abstract: Region-based encoding apparatus and decoding apparatus. The encoding apparatus selects an optimum region division mode from region division modes with respect to regions divided from an image frame, and transmits, to the decoding apparatus, an optimum image filtering method and an optimum filter coefficient of regions divided, according to the optimum region division mode.

Abstract: A spatial prediction method capable of reducing the complexity of spatial prediction includes: detecting an edge (E) overlapping the current block by obtaining a horizontal gradient (Gy) and a vertical gradient (Gx) between pixels within a block adjacent to the current block; calculating an integer slope of the edge; determining, for each pixel position within the current block, a sub-pel position being an intersection between (i) a line that has the integer slope and passes through the pixel position and (ii) a boundary of the adjacent block; and predicting, for each pixel position, a pixel value at the pixel position based on a pixel value interpolated in the sub-pel position, wherein the boundary of the adjacent block is a row or a column that is the closest to the current block, among rows or columns of pixels included in the adjacent block.

Abstract: A deblocking filter 24 performs filtering of decoded image data obtained by decoding image data encoded for each block, so as to remove block distortion. If at least one of block sizes on adjacent sides of two adjacent blocks is extended larger than a predetermined block size, a filter setting unit 41 sets the tap length to an extended length to increase the strength of distortion removal, or sets a filtering object pixel range to an extended range. When a macroblock having an extended size is used, the degree of smoothing is increased, and pixels including those distant from the block boundary are subjected to filtering. Consequently, even when various block sizes are employed or when blocks of extended sizes are used, images of high image quality can be achieved.

Abstract: Examples of the present invention provide a method and device for image compression coding. The method includes: obtaining a designated area selected from an image at a decoding side; determining quantization coefficients of the image to make an image compression ratio of the designated area lower than image compression ratios of areas in the image other than the designated area; and performing a compression coding on the image using the determined quantization coefficients of the image. By using the present invention, a video communication system may support a user to select an interested area in a video image, and clearly transmit the interested area selected by the user.

Abstract: A sequence of n coefficients is compressed by determining a cost-determined sequence of n coefficient indices represented by a cost-determined sequence of (run, index derivative) pairs under a given quantization table and run-index derivative coding distribution, wherein each sequence of (run, index derivative) pairs defines a corresponding sequence of coefficient indices such that (i) each index in the corresponding sequence of coefficient indices is a digital number, (ii) the corresponding sequence of coefficient indices includes a plurality of values including a special value, and (iii) each (run, index derivative) pair defines a run value representing a number of consecutive indices of the special value, and an index-based value derived from a value of the index following the number of consecutive indices of the special value.

Abstract: An image processor that achieves reduction in delay amount, in comparison with code amount control GOP by GOP or frame by frame, is obtained.

Abstract: An image scanning apparatus according to this disclosure, includes: a reference data acquiring unit configured to acquire reference data to be used for shading correction as integer data; a short-bit-length data generating unit configured to generate short-bit-length data from the reference data, a bit-length of the short-bit-length data being shorter than a bit-length of the reference data acquired by the reference data acquiring unit; and a memory that the short-bit-length data is stored in. The short-bit-length data generating unit is further configured to generate the short-bit-length data which has a value obtained by subtracting a value of offset data from a value of the reference data. The value of the offset data is a predetermined value lower than an estimated minimum value of the reference data acquired by the reference data acquiring unit.

Abstract: Methods and non-transitory computer readable media that store executable instructions to perform a method for reducing motion artifacts in shear wave measurements are presented. Accordingly, reference pulses are delivered to a common motion tracking location (CMTL) and a plurality of target locations in a region of interest (ROI) to detect corresponding initial positions. Further, a shear wave is generated and tracked in the ROI using tracking pulses delivered to the CMTL and the plurality of target locations for determining corresponding displacements. Additionally, an average displacement of the CMTL is computed. Further, a motion corrected displacement for a target location in the plurality of target locations is estimated based on a displacement of the target location at a particular time, a corresponding displacement of the CMTL measured proximate in time to the measurement of the displacement of the target location and the average displacement of the CMTL.

Abstract: An image processing apparatus, an image processing method, and a computer program, visually remove low-frequency noise contained in image data. Image data containing low-frequency noise is input from an input terminal. A window unit designates a window made up of a pixel of interest, and its surrounding pixels. A pixel selector selects a selected pixel to be compared with the pixel of interest from the window, and a pixel value determination unit determines a new pixel value of the pixel of interest on the basis of the pixel values of the selected pixel and pixel of interest. New image data is generated by substituting the pixel value of the pixel of interest by the new pixel value.

Abstract: An embodiment provides a method for image upscaling. The method includes anti-aliasing an input image and downsampling the input image to create a lower resolution image. The method also includes interpolating the lower resolution image to obtain a higher resolution image and creating a filter map from the input image and the higher resolution image. The method also includes upsampling the input image using the filter map to create a high-resolution image.

Abstract: Embodiments of the invention include a re-sealable and re-useable storage device with an integral vacuum sealing feature that can be used to create an air tight vacuum sealed environment within the storage device without a machine or pump. Embodiments of the invention further include retrofit kits for adding a vacuum sealing function to a storage device configured to provide an air tight seal but not otherwise configured to allow air to be removed from such storage device once sealed.

Abstract: Provided are an epoxy resin curing agent having excellent properties and high gas barrier capability that epoxy resin has and, in addition thereto, capable of realizing good adhesiveness to polyester and aluminium; an epoxy resin composition containing the curing agent; an adhesive for lamination including the composition as the main ingredient thereof; and a laminate film, a multilayer wrapping material and a wrapping bag using the adhesive. The epoxy resin curing agent comprises a reaction product of the following (A), (B) and (C): (A) meta-xylylenediamine or para-xylylenediamine, (B) a polyfunctional compound having one acyl group and capable of forming an amide group moiety through reaction with a polyamine and forming an oligomer, (C) a metal (meth)acrylate salt with a divalent or more polyvalent metal.

Abstract: A storage bag for holding objects and materials is disclosed. The storage bag includes a pair of outer sheets and an inner sheet. The outer sheets are coupled by three seams. The storage bag has a cavity between the outer sheets and an opening. The inner sheet is mounted between portions of the outer sheets near the opening. The third sheet extends across the outer sheets between a pair of seams. The inner sheet has three layers that are coupled to each other. A first layer is coupled to one of the outer sheets by another seam and a third layer is adapted to be heat bonded to the other outer sheet. A weak bond area is formed between the third layer and the outer sheet. The weak bond allows the storage bag to be easily opened. A method of manufacturing the storage bag is also disclosed.

Abstract: Methods of enhancing one or more physical properties of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction and/or transverse direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films without reducing the films' machine-direction tear resistance. The methods can involve cold stretching the films and imparting rib patterns into the film. The linear ribs can have alternating thick and thin gauges. Incrementally stretched thermoplastic films can have a machine-direction tear resistance that is approximately equal to or greater than the machine-direction tear resistance of the film prior to stretching.

Abstract: A mount bushing of a stabilizer bar for a vehicle includes an insert adapted to be directly molded to a predetermined position of the stabilizer bar, a sliding bearing comprising a pair of bearings and adapted to be coupled to an exterior circumference of the insert, a lubrication layer being formed between the insert and the sliding bearing, a rubber bushing comprising upper and lower rubber members and adapted to be coupled to the sliding bearing such that the rubber bushing encloses an exterior circumference of the sliding bearing, a bracket adapted to enclose the rubber bushing and to be fixed to a vehicle body, and first and second sealing means adapted to prevent foreign materials from flowing into the rubber bushing and to prevent grease in the rubber bushing from flowing out.

Abstract: A linear bearing drawer slide assembly comprised of a spring damper mechanism attached to a fixed member slidingly engaged with a middle member slidingly engaged with a drawer member. The spring damper mechanism is comprised of a base connected to a guide track which includes a longitudinal channel and a pair of opposing catches. A carriage slidingly engages the guide track. A pivotal latch pivots on a column of the carriage and further includes a pair of posts that extend through the carriage to engage the pair of catches in the guide track. The base and the carriage secure a pair of springs providing a balanced closing force against a damper which reduces unwanted wear and prolongs the useable life of the drawer slide assembly.

Abstract: A slide-rail stabilizing structure includes a sliding-rail frame, a sliding seat, an adjusting seat and elastic members. The sliding-rail frame includes a first sliding rail and a second sliding rail. The sliding seat provided with two sliding-seat moving objects is slidably moved along the first sliding rail. The adjusting seat has an adjusting-seat moving object abutted against the second sliding rail. The elastic members are respectively disposed between the sliding seat and the adjusting seat, so that the adjusting-seat moving objects linked by the linked adjusting seat retains an elasticity to abut against the second sliding rail, forming the sliding seat to stably assemble with and to smoothly slide on the sliding-rail frame. Meanwhile, the adjusting-seat moving object exerts a driving force on the sliding seat when the adjusting-seat moving object slides to the curved portion, thus attaining labor saving at the terminal of the sliding process.

Abstract: A linear stopper including a stopper body having an inclined surface with a wedge-like space between the inclined surface and a surface of the guide member with a gap decreasing gradually toward one side of an extending direction of the guide member; rolling elements that are arranged in said wedge-like space so as to be rollable therein; and rolling element pressing means that presses the rolling elements in a direction to bite into the wedge-like space, so that the rolling elements are forced into pressure contact with the surface of the guide member and the inclined surface of the stopper body. A one-way stopper mechanism restricts the relative movement of the stopper body with respect to said guide member toward a side at which the gap in the wedge-like space is large, but allows the relative movement toward a side at which the gap in the wedge-like space is small.

Abstract: A mount bushing assembly of a stabilizer bar for a vehicle, may include an inner bushing including a rubber member having a tubular shape and coupled to an external circumference of the stabilizer bar, and a pipe enclosing an external circumference of the rubber member, a sliding bearing including a pair of bearings coupled to upper and lower portions of an external circumference of the inner bushing, and a bracket including upper and lower brackets that may be coupled each other, and integrally formed at an interior surface thereof with an upper outer bushing and a lower outer bushing respectively, wherein the bracket may be fixed to a vehicle body in a state of enclosing the sliding bearing.

Abstract: A wheel bearing apparatus incorporating a rotation speed detecting apparatus has an outer member, an inner member, double row rolling elements, a pulser ring, a cup-shaped sensor cap and a rotation speed sensor. The sensor cap is press-formed from anti-corrosion steel sheet into a cup-shaped configuration with a cylindrical fitting portion, to be press-fit into the end of the outer member, and a bottom portion, extending radially inward from the fitting portion to cover the inner-side end of the inner member. The rotation speed sensor is oppositely arranged so that it abuts or is positioned in close proximity to the bottom portion and accordingly the pulser ring. The rotation speed sensor and pulser ring oppose one another a predetermined axial air gap via the bottom portion. An elastic member is pressed and elastically deformed between the fitting portion of the sensor cap and the end of the outer member.

Abstract: A bearing includes a first inner race half and a second inner race half, and a first outer race half and a second outer race half. A cage defining a plurality of openings supports a plurality of rollers. The bearing is assembled by positioning the first inner race half on a mandrel and the first outer race half on a work support, positioning the cage with the rollers supported in the openings adjacent to and concentric with the first inner race half and the first outer race half. The second inner race half and the second outer race half are positioned adjacent the first inner race half and the first outer race half respectively. The first inner race half and the second inner race half, and the first outer race half and the second outer race half are then bonded together to form the bearing assembly.

Abstract: A bearing apparatus to be supported by an axle box which includes a key groove, the bearing apparatus includes an outer ring which includes a first key groove extending from an inner diameter to an outer diameter of an axial end surface of the outer ring, an inner ring, rolling elements rollably interposed between the outer and inner rings, and a key member which includes an annular body, a first inwardly projecting part which is provided on the annular body and adapted to be inserted into the first key groove of the outer ring, and an outwardly projecting part which is provided on an outer periphery of the annular body and adapted to be inserted into the key groove of the axle box.

Abstract: A tunable Radio Frequency (RF) filter device includes a tunable optical source configured to generate an optical carrier signal, and a modulator coupled to the tunable optical source and configured to modulate the optical carrier signal with an RF input signal. The tunable RF filter device may also include first and second optical waveguides coupled to the modulator and having first and second dispersion slopes of opposite sign, and an optical-to-electrical converter coupled to the first and second optical waveguides and configured to generate an RF output signal with a frequency notch therein based upon the tunable optical source.

Abstract: A tunable Radio Frequency (RF) filter device includes a tunable optical source generating an optical carrier signal, and a modulator coupled to the tunable optical source and modulating the optical carrier signal with an RF input signal. The tunable RF filter device may include first and second optical waveguide paths coupled to the modulator and having first and second dispersion slopes of opposite sign from each other, one or more of the first and second optical waveguide paths comprising an optical splitter and combiner pair therein, and an optical-to-electrical converter coupled to the first and second optical waveguide paths and generating an RF output signal with a frequency notch therein based upon the tunable optical source.

Abstract: 2-pattern photonic crystal and the associated photonic devices are described here. A 2-pattern photonic crystal has a large, complete photonic band gap. It includes a TM sub-structure providing a large TM photonic band gap superimposed on a TE sub-structure providing a large TE photonic band gap. The resulting 2-pattern photonic crystals have complete photonic band gaps larger than 15%, By altering the respective sub-structures, optical devices for different polarizations (TE, TM or both) can be readily designed, and those optical devices can be integrated on the same plane.

Abstract: Systems and methods for integrating and/or registering a shape sensing fiber in or to various instruments are described herein. Registration fixtures and registration techniques for matching the coordinate system of a fiber to the coordinate system of an elongate instrument or other device are provided. Various systems and methods for integrating a shape sensing fiber into an elongate instrument or other device are also described herein.

Abstract: Distributed fiber optic sensor includes a composite support tube that closely matches the coefficient of thermal expansion of the optical sensing fiber contained therewithin for applications including but not limited to Rayleigh back-scattering, (OFDR, Optical Frequency Domain Reflectometry), Brillouin frequency shift (BOTDA, Brillouin Optical Time Domain Analysis, BOTDR, Brillouin Optical Time Domain Reflectometry), Raman (Optical Time Domain Reflectometry), DPP-BOTDA (Differential Pulse Pair Brillouin Optical Time Domain Analysis), Dual-Index BOTDA, PCF (Photonic Crystalline Fibers), and dense packed Fiber Bragg Gratings, both time and wave length modulated are described in detail.

Abstract: A multi-port wavelength selective switch includes a one dimensional array of input and output ports. The multi-port wavelength selective switch further includes a wavelength dispersive element configured to receive input optical signals from the input ports, and to disperse wavelength components thereof. Additionally, the multi-port wavelength selective switch includes an array of beam steering devices. Each beam steering device is controllable to a position at which the beam steering device directs a wavelength component of an input optical signal received through a first input port to an output port and directs the same wavelength component of an input optical signal received through a second input port away from all of the output ports.

Abstract: This patent disclosure is based on silicon instead of LiNbO3, waveguide chip. The disclosed silicon-based multi-function integrated-optic chip comprises of unique design and fabrication features onto it. First, a unique polarization-diversity coupler is designed and fabricated to couple the external light into the silicon waveguide structure. Then TE mode is guided into a silicon slab waveguide, but TM mode is confined and diverted 90 degree in a silicon carbide structure till the chip edges for TM-mode suppression. Second, a unique two-step (vertical and lateral) taper waveguide region is designed and fabricated to bridge the polarization-diversity coupler output with the input of a multi-mode interferometer (MMI) splitter for power loss reduction. In this configuration, MMI may be a 1×2 or 2×2 structure to divide the input TE mode into a 50/50 splitting ratio output to form a Y-junction.

Abstract: In one or more embodiments, wedge light guides are constructed that are monolithic in nature and include integrally-formed optical concentrators. The wedge light guide and its associated optical concentrators are defined by a mold. In at least some embodiments, structure within the mold that defines the optical concentrators can be used as injection ports through which formation material can be injected to form the monolithic wedge light guide.

Abstract: An optical device includes first and second optical waveguides that each include a core and a cladding, and a connector that optically couples the first optical waveguide and the second optical waveguide with a lens interposed therebetween, wherein, in at least one of the first and the second optical waveguides, a difference in refractive index between the core and the cladding in a first direction differs from a difference in refractive index between the core and the cladding in a second direction that is different from the first direction, and wherein, in at least one of the first and the second optical waveguide, a first point of emergence of first rays that are output at angles in the first direction and a second point of emergence of second rays that are output at angles in the second direction are offset from each other along an optical axis.

Abstract: A ferrule assembly includes a ferrule comprising a ferrule boot insertion end and a ferrule boot defining an optical fiber channel. The optical fiber channel of the ferrule boot is shaped to receive a plurality of optical fibers therethrough. The ferrule boot includes an outer shell and a heat-activated adhesive liner is positioned within the outer shell channel and coupled to the inner surface of the outer shell. A portion of the outer shell is sized to be at least partially inserted into the ferrule boot insertion end of the ferrule. The outer shell has a thermal melting point that is greater than a thermal melting point of the heat-activated adhesive liner such that the heat-activated adhesive liner melts for adhering the plurality of optical fibers to the outer shell upon receipt of thermal energy.

Abstract: An optical fiber connector assembly includes at least one ferrule, the ferrule having a front end, at least one bore for receiving at least one optical fiber, and an optical fiber at least partially disposed in the bore, at least a portion of the at least one optical fiber being disposed in the at least one ferrule bore so that a section of the at least one fiber portion has an end face that is essentially even with the ferrule front end, a section of the optical fiber having a bulge which has a size which is larger than the bare optical fiber diameter, the fiber at least partially contacts a surface of the ferrule bore, and the contact defining a fiber-to-ferrule interface region. The fiber-to-ferrule interface region includes substantial contact between the bulge and a portion of the surface of the bore such that movement of the fiber in the bore is inhibited and the remaining portion of the optical fiber is substantially centered in the at least one bore.

Abstract: A fiber optic cable includes an outer jacket, an optical fiber ribbon, and reinforcing member configurations. The outer jacket has an elongated transverse cross-sectional profile that defines a major axis and a minor axis that meet at a lengthwise axis of the fiber optic cable. The outer jacket defines a central fiber passage that extends through the outer jacket along a lengthwise axis of the outer jacket. The optical fiber ribbon is positioned within the central fiber passage. The reinforcing member configurations are positioned within the outer jacket on opposite sides of the central fiber passage. Each of the reinforcing member configurations has a transverse cross-sectional profile that includes first and second legs that are angled relative to one another such that they diverge as the first and second legs extend toward the minor axis.

Abstract: An optical fiber ribbon includes: a plurality of optical fibers arranged in parallel; and a tape material covering the plurality of optical fibers into a tape, in which the plurality of optical fibers are coated respectively with translucent color layers of different colors, and in at least two of the plurality of optical fibers, markings for identifying the optical fiber ribbon are provided at a same position in a longitudinal direction of the optical fiber ribbon.

Abstract: A trench-assisted, multimode optical fiber includes a central core having an alpha refractive index profile with respect to an outer cladding. The optical fiber also includes an inner cladding, a depressed trench, and an outer cladding. The optical fiber achieves reduced bending losses and a high bandwidth.