Abstract: A moving body speed derivation method that causes at least one computer to execute a process, the process includes deriving a reference point in a second moving body region that is an image of a second moving body, from one image capturing the second moving body among a plurality of time-series images captured by an imaging device installed in a first moving body; deriving a position of the second moving body based on a distance between the imaging device and a feature point in the second moving body corresponding to the reference point in the second moving body region; and deriving speed of the second moving body based on a change amount of the position of the second moving body corresponding to the second moving body region included in the plurality of time-series images.

Abstract: A non-transitory computer-readable recording medium stores an image processing program for causing a computer to execute a process including: obtaining a plurality of images consecutively captured in a time series manner; calculating a probability that a type of an object present in each of the plurality of images is one type using a trained classification model; determining whether or not the probability that the type of the object is the one type periodically changes in consecutive images among the plurality of images; and in a case of determining that the probability periodically changes, saving one image within a period in which the probability that the type of the object is the one type periodically changes as training data.

Abstract: A camera height calculation method that causes a computer to execute a process, the process includes obtaining one or more images captured by an in-vehicle camera, extracting one or more feature points from the one or more images, identifying first feature points that exist over a road surface from the one or more feature points, and calculating a height of the in-vehicle camera from the road surface, based on positions of the identified first feature points.

Abstract: A moving body speed derivation method that causes at least one computer to execute a process, the process includes deriving a reference point in a second moving body region that is an image of a second moving body, from one image capturing the second moving body among a plurality of time-series images captured by an imaging device installed in a first moving body; deriving a position of the second moving body based on a distance between the imaging device and a feature point in the second moving body corresponding to the reference point in the second moving body region; and deriving speed of the second moving body based on a change amount of the position of the second moving body corresponding to the second moving body region included in the plurality of time-series images.

Abstract: A camera height calculation method that causes a computer to execute a process, the process includes obtaining one or more images captured by an in-vehicle camera, extracting one or more feature points from the one or more images, identifying first feature points that exist over a road surface from the one or more feature points, and calculating a height of the in-vehicle camera from the road surface, based on positions of the identified first feature points.

Abstract: Provided are silicon fine particles that are effectively prevented from being oxidized and have a crystallite diameter close to that of an amorphous substance. The silicon fine particles of the present invention have an average diameter of primary particles of 30 to 900 nm, a crystallite diameter of less than 10 nm, a chlorine concentration of 1 to 10% by mass, and a ratio (Co/S) of an oxygen concentration (Co: % by mass) to a specific surface area (S: m2/g) of less than 0.05. The method for producing silicon fine particles of the present invention includes: heating a gas containing trichlorosilane to a temperature of 600 to 950° C. in a reactor and thermally decomposing the trichlorosilane to produce a silicon fine particle precursor containing chlorine, then collecting the silicon fine particle precursor, and then heating and dechlorinating the collected silicon fine particle precursor at a temperature of 750 to 900° C. under supply of an inert gas or under reduced pressure.

Abstract: A polycrystalline silicon rod is formed of polycrystalline silicon deposited radially around a silicon core line and is characterized by, in a cross-section that is a perpendicular cut in respect to the axial direction of a cylindrical rod, a ratio of surface area covered by coarse crystal particles having a diameter of 50 ?m or greater is 20% or more of the crystal observed at the face, excluding the core line portion.

Abstract: A core wire holder 3 attached on an electrode 2 placed on a bottom panel of a device 20 for producing silicon by Siemens process includes a silicon core wire holding portion 9 being generally circular truncated cone-shaped, and holding and energizing a silicon core wire 4. The silicon core wire holding portion 9 includes a generally circular truncated cone having an upper surface formed with a silicon core wire insertion hole 7 for holding the silicon core wire 4, and the silicon core wire holding portion 9 includes an upper surface and a side surface, which form a ridge having a curved surface and serving as a chamfered portion 8.

Abstract: A core wire holder 3 attached on an electrode 2 placed on a bottom panel of a device 20 for producing silicon by Siemens process includes a silicon core wire holding portion 9 being generally circular truncated cone-shaped, and holding and energizing a silicon core wire 4. The silicon core wire holding portion 9 includes a generally circular truncated cone having an upper surface formed with a silicon core wire insertion hole 7 for holding the silicon core wire 4, and the silicon core wire holding portion 9 includes an upper surface and a side surface, which form a ridge having a curved surface and serving as a chamfered portion 8.

Abstract: A polycrystalline silicon rod is formed of polycrystalline silicon deposited radially around a silicon core line and is characterized by, in a cross-section that is a perpendicular cut in respect to the axial direction of a cylindrical rod, a ratio of surface area covered by coarse crystal particles having a diameter of 50 ?m or greater is 20% or more of the crystal observed at the face, excluding the core line portion.

Abstract: Provided is a fire resistant resin composition comprising 100 parts by weight of a thermoplastic resin (I) such as a polyolefin base resin, 10 to 300 parts by weight of at least one flame retardant (II) selected from the group consisting of a nitrogen base flame retardant having no halogen atoms such as an aliphatic amine compound (a) and a triazine compound, a phosphorus base flame retardant having no halogen atoms such as a simple substance (b) of phosphorus, phosphates and polyphosphates and a nitrogen.multidot.phosphorus base flame retardant having no halogen atom such as a phosphate of an aliphatic amine compound (c), a polyphosphate of an aliphatic amine compound, a phosphate of a triazine compound and a polyphosphate of a triazine compound, and 1 to 100 parts by weight of phyllosilicate hydrate (III).