Abstract: Embodiments of the present disclosure relate to the field of media technologies, and disclose an encoding method and apparatus, and a decoding method and apparatus, to reduce a rendering loss caused by compression of probe data. The encoding method includes: first determining a target normalization combination of a probe data group, then normalizing the probe data group based on the target normalization combination to obtain a normalized probe data group, and encoding the normalized probe data group into a bitstream. The target normalization combination minimizes a rendering loss corresponding to the probe data group among a plurality of normalization combinations, and the target normalization combination includes a target normalization method and a target normalization parameter.

Abstract: This application provides an image dynamic range processing method and apparatus. The method includes: obtaining a first coordinate value of a first interpolation point and a first coordinate value of a third interpolation point related to a first cubic spline curve; and determining, based on histogram information of a first luminance interval of a to-be-processed image, a first coordinate value of a second interpolation point related to the first cubic spline curve. The first luminance interval is an interval between the first coordinate value of the first interpolation point and the first coordinate value of the third interpolation point. The first coordinate value of the first interpolation point, the first coordinate value of the second interpolation point, and the first coordinate value of the third interpolation point are used to determine a function of the first cubic spline curve.

Abstract: The present disclosure relates generally to the field of video processing, and more particularly, to high dynamic range (HDR) image processing. In particular, the present disclosure relates to a method for determining a parameter set for a tone mapping curve. The method comprises obtaining a plurality of parameter sets, wherein each parameter set defines the tone mapping curve, and wherein each parameter set is derived based on one of a plurality of HDR video frames. Further, the method comprises temporally filtering the plurality of parameter sets to obtain a temporally filtered parameter set.

Abstract: Tone mapping methods and apparatus provide for receipt by a backend device may of metadata and an HDR image from a frontend device and the generation of a mapping curve based on feature parameters of the mapping curve included in the metadata. Tone mapping on the HDR image can be performed based on the mapping curve. The feature parameters of the mapping curve are determined by the frontend device based on a luminance distribution status of the HDR image. In this way, the mapping curve parameters are determined based on the luminance distribution status of the HDR image so that design of the mapping curve is more flexible, and display effect of the HDR image can be effectively improved.

Abstract: The invention discloses a signal skew compensation apparatus and method. The signal skew compensation apparatus comprises: a clock detection module (1) for detecting a frequency output of an input clock signal; a DELAY module (2) for receiving a data signal and introducing a delay, a delay amount being controlled and delayed data being output based on the frequency detected by the clock detection module (1) and a DELAY value output by a data parsing control module (3); and the data parsing control module (3) for receiving the delayed data and parsing a PING message therein, and adjusting the output DELAY value based on a parsing result. The invention has the advantages of simple implementation, low cost, dynamically adjustable signal skew compensation amount, and high flexibility, real-time performance and efficiency.

Abstract: This application relates to the field of image processing technologies, and discloses an image processing method and system, and a device, to resolve a problem that tone mapping greatly affects perception of a binocular 3D image. Based on a disparity map of a binocular image, a tone mapping curve is determined for a display device to display an image, instead of being generated merely based on image content. This makes a contrast of a tone mapped binocular image reach at least a level before tone mapping, thereby meeting a minimum disparity variation requirement for 3D perception by human eyes, and improving 3D perception of a 3D image displayed by the display device.

Abstract: This application provides an image dynamic range processing method and apparatus. The method includes: obtaining a first coordinate value of a first interpolation point and a first coordinate value of a third interpolation point related to a first cubic spline curve; and determining, based on histogram information of a first luminance interval of a to-be-processed image, a first coordinate value of a second interpolation point related to the first cubic spline curve. The first luminance interval is an interval between the first coordinate value of the first interpolation point and the first coordinate value of the third interpolation point. The first coordinate value of the first interpolation point, the first coordinate value of the second interpolation point, and the first coordinate value of the third interpolation point are used to determine a function of the first cubic spline curve.

Abstract: A blade disc machining center tool magazine including a T2 axis rotation assembly; and an A axis rotation assembly, wherein the T2 axis rotation assembly can move along a T1 axis, and when an axis of a swing head is parallel to a plane where a tool disc is located, or is in the plane where the tool disc is located, the axis of the swing head is parallel to or coincides with a linear axis of the tool disc. A blade disc machining center tool changing method does not require the use of complex equipment such as manipulators. A tool changing process can be completely implemented by relying on the mutual cooperation of a Z axis, a Y axis and the T1 axis of a machine tool.

Abstract: The present disclosure relates generally to the field of video processing, and more particularly, to high dynamic range (HDR) image processing. In particular, the present disclosure relates to a method for determining a parameter set for a tone mapping curve. The method comprises obtaining a plurality of parameter sets, wherein each parameter set defines the tone mapping curve, and wherein each parameter set is derived based on one of a plurality of HDR video frames. Further, the method comprises temporally filtering the plurality of parameter sets to obtain a temporally filtered parameter set.

Abstract: The present invention provides a linkage swing head structure, including: a base, a drive mechanism and a spindle. The drive mechanism includes: a power mechanism, a connecting rod mechanism and a lead screw. An end of the spindle is fixed with a cutter, and the spindle is fixed on an end of the connecting rod mechanism. An end of the connecting rod mechanism fixed with the spindle is sleeved on a support bearing, the connecting rod mechanism can rotate around the support bearing, the support bearing is fixed on the base, and the other end of the connecting rod mechanism is movably connected to the lead screw. An output end of the power mechanism is connected to an end of the lead screw. The connecting rod mechanism adjusts the rotation angle of the spindle by sliding on the lead screw. The drive mechanism of the present invention is far away from the spindle, and the interference range thereof to the spindle is small.

Abstract: A battery cap and a battery related to the technical field of batteries are provided. At least a partial region of a first surface of a cap plate is provided with a first groove. At least a partial region of a third surface of a lower insulating member is provided with a first protrusion. The first protrusion is accommodated in the first groove. The portion of a fourth surface corresponding to the first protrusion is provided with a second groove. In a first direction, a bottom portion of the second groove is higher than a lowest position of the cap plate. One end of the electrode terminal facing away from a connecting plate passes through the lower insulating member and the cap plate and extends to a second surface. The connecting plate is arranged in the second groove and abuts against a bottom wall of the second groove.

Abstract: This application provides a high dynamic range HDR video processing method, an encoding device, and a decoding device. The method includes: obtaining dynamic metadata of an Nth HDR video frame according to a dynamic metadata generation algorithm; calculating a tone-mapping (tone-mapping) curve parameter of the Nth HDR video frame based on the dynamic metadata of the Nth HDR video frame; generating a tone-mapping curve based on the curve parameter; determining, according to a quality assessment algorithm, distortion D? caused by the tone-mapping curve; comparing D? and DT, to determine a mode used by the Nth HDR video frame, where the mode is an automatic mode or a director mode, and DT is a threshold value; and determining metadata of the Nth HDR video frame based on the determined mode used by the Nth HDR video frame.

Abstract: The present disclosure relates generally to the field of video processing, and more particularly to high dynamic range (HDR) video and image processing. In particular, the present disclosure relates to determining one or more curve parameters of a tone mapping curve. For example, a device (encoder or decoder) may obtain a high dynamic range (HDR) video frame and metadata associated to the HDR video frame. The device further obtains a pair of anchor points, based on the HDR video frame and the metadata. The pair of anchor points comprises a first anchor point and a second anchor point of the tone mapping curve. Moreover, the device generates the one or more curve parameters of the tone mapping curve based on the pair of anchor points.

Abstract: This application provides a dynamic range mapping method and apparatus. The dynamic range mapping method includes: obtaining a display parameter of a terminal device; obtaining feature information of image data; obtaining a first parameter of a first tone mapping curve of the image data; when a preset condition is met, obtaining a second parameter of a second tone mapping curve based on the first parameter, the display parameter of the terminal device, and the feature information of the image data, where output luminance at a first point on the second tone mapping curve is not greater than input luminance at the first point on the second tone mapping curve; and performing dynamic range mapping on the image data based on the second parameter of the second tone mapping curve.

Abstract: The present invention discloses a double-swing angle spindle head, in which an A-axis swing shaft is connected to the spindle head through the flange on the end face to realize the swing of the A-axis, and a crank connecting rod mechanism composed of a first rotating shaft, a second rotating shaft, a B-axis rotating shaft and a swing connecting rod realizes the swing of the B-axis under the push-pull action of the B-axis mechanism. Under the action of the linear push-pull mechanism, the linear axis feed movement between a ram and a saddle is realized. Thus, the freedom of movement range of the spindle head is improved, the rigidity, torque and precision of the spindle head are enhanced, and the volume and weight of the spindle head equipment are reduced.

Abstract: A mapping curve parameter obtaining method and apparatus are described. The method includes obtaining a first mapping curve parameter set and first maximum target system display luminance, and obtaining a display luminance parameter set, where the display luminance parameter set includes maximum display luminance and/or minimum display luminance of a display device. The method also includes obtaining an adjustment coefficient set, where the adjustment coefficient set includes one or more adjustment coefficients, and the one or more adjustment coefficients correspond to one or more parameters in the first mapping curve parameter set. Furthermore, the method includes adjusting the one or more parameters in the first mapping curve parameter set based on the display luminance parameter set, the first maximum target system display luminance, and the adjustment coefficient set to obtain a second mapping curve parameter set, where the second mapping curve parameter set includes one or more adjusted parameters.

Abstract: The present invention discloses a belt-transmission angle attachment head, including a housing, a power mechanism, a transmission mechanism and a spindle; the power mechanism and transmission mechanism are arranged in the housing; the power mechanism includes a servo motor and a reducer, the servo motor is connected to the reducer, and an input shaft of the reducer is vertically arranged with respect to an output shaft of the reducer; the transmission mechanism includes a driving wheel, a transmission belt and a driven wheel, and the driving wheel is mounted on the output shaft of the reducer; a side of the spindle is mounted on the housing via a rotating shaft, an end of the rotating shaft away from the spindle is mounted with the driven wheel, the driving wheel and the driven wheel are connected via the transmission belt, and the spindle and the power mechanism are located on the same side of the transmission mechanism.

Abstract: A cover assembly as well as a secondary battery, a battery assembly and an electronic device using the cover assembly of the present disclosure includes a cover body opened with an electrode pillar mounting hole; an electrode terminal including a bottom plate disposed on one side of the cover body; and an electrode pillar disposed on the bottom plate, at least partially passing through the electrode pillar mounting hole, and extending along the thickness direction of the cover body to the other side of the cover body; a sealing ring that is disposed around the electrode pillar and at least partially disposed between the cover body and the bottom plate; a position-limiting structure provided on at least one of the electrode terminal and the sealing ring for limiting the movement of the sealing ring in the thickness direction of the cover body.

Abstract: Disclosed are a device and a method for producing high-pressure or super high-pressure steam as a byproduct from a maleic anhydride producing device. The device includes a super high-pressure steam drum, a molten salt pump, an oxidation reactor, a regulating valve, molten salt coolers, a switching cooler and a gas cooler. The molten salt pump, the oxidation reactor, the regulating valve and the molten salt coolers are connected. A boiler water buffer device and a boiler water booster pump are arranged between the switching cooler and the gas cooler. The unique design of the boiler water intermediate pressure boosting and the gas cooler in the disclosure makes the gas cooler and the switching cooler very easy to manufacture. Heat can be effectively recovered from process gas to produce high-pressure or super high-pressure steam while accumulation of dust in the process gas is avoided and tar adhesion is easy to clean.

Abstract: This application provides an image processing method, including: adaptively determining at least one interpolation point based on feature information or dynamic metadata of a to-be-processed image, and determining the at least one interpolation point and a modified spline curve that passes through the at least one interpolation point, where the modified spline curve includes at least one of a linear spline curve or a cubic spline curve; and performing tone mapping on the to-be-processed image based on a modified tone mapping curve, where the modified tone mapping curve includes at least a part of an initial tone mapping curve and the modified spline curve. According to the method provided in this application, the tone mapping curve can be adaptively modified based on a scene requirement, so that images in various scenes can have a good display effect.