9 results about "Real size" patented technology

The utility model discloses the technical field of machining measurement device, more specifically discloses a kind of for the size measurement tool of incomplete circle, comprising: tool main body, detachably set on part;Compensation component, set on tool main body, can be synchronous with the arc to be processed Machining;Wherein, the straight line of the center of the arc to be processed of compensation component and arc to be processed can pass through arc to be processed;Measuring component is used to measure the diameter between compensation component and arc to be processed;By using the utility model, arc can be measured in real time during processing, cancel the use of radius gauge and three-dimensional coordinate instrument;Greatly reduce the difficulty of real-time measurement arc actual size in part processing process, improve the arc size measurement stability and accuracy, can effectively improve the product quality and stability of part.

The application discloses a method and device for inverse form-finding of cable elements, and a storage medium, which projects a building space curved surface to an xoy plane to obtain a building outer contour projection line; an initial net shell structure model is designed according to the building outer contour projection line and combined with building modeling needs; real boundary conditions are set for the net shell structure model, real loads are applied, all beam elements in the net shell structure model are replaced by cable elements, initial stiffness is set, and an initial cable structure model is obtained; a finite element analysis software is used to obtain deformation forms and deformation data of the cable structure model under real loads and real boundary conditions; the obtained deformation data is scaled and inverted in combination with actual building sizes to obtain an optimal structure form matched with an actual building form. The form-finding calculation process of the application does not need multiple iterative calculations, effectively saves time cost, greatly improves structure form-finding efficiency, is simple to operate, low in design difficulty and high in design efficiency.

A method for determining object's size, including: providing a calibration card having a picture printed thereon; providing a first real size of the picture; setting a camera of a computing device to a fixed focus; capturing a first image of the calibration card when the picture is in focus; measuring a first virtual size of the at least one dimension in the first image in pixels; calculating a pixel density of the first image, by dividing the first virtual size by the first real size; capturing a second image of an object, when the object is in focus; measuring a second virtual size of at least one distance between two virtual points located on the second image; calculating a second real size of at least one distance between two real points of the object corresponding to the two virtual points, by dividing the second virtual size by the pixel density.

This application relates to a method for manufacturing high-density buried via multilayer boards suitable for AI server storage modules, comprising the following steps: drilling, high-temperature baking, flash plating, dry film deposition of the vias, resin plug application, ceramic brushing, and browning film application are sequentially performed on a sub-board that has undergone one-time lamination; during the above expansion and contraction control processing steps and before the second lamination, layer misalignment detection strips pre-set in the non-functional areas of the sub-board are measured to obtain real-time expansion and contraction data characterizing the actual dimensional expansion and contraction state of the sub-board after processing; the real-time expansion and contraction data are input into a second lamination alignment system, which dynamically adjusts the grasping compensation coefficient of the composite alignment target set on the sub-board based on the real-time expansion and contraction data, and performs subsequent processing on at least two sub-boards according to the compensated alignment reference to form a multilayer board. This manufacturing method reduces expansion and contraction variables through source process optimization, significantly improving alignment accuracy and yield.

The embodiment of the present application provides a kind of face size determination method and device, wherein the method comprises: the first test face image of the target to be measured is collected, wherein the first test face image includes the first test face of the target to be measured and circular reference object;First pixel value of the first test face is obtained, and the second pixel value of the circular reference object is obtained;In the case where the circularity of the circular reference object is greater than the preset circularity threshold, the horizontal tilt angle and the vertical tilt angle of the circular reference object are obtained according to the standard major axis of the circular reference object;According to the first pixel value, the second pixel value, the horizontal tilt angle, the vertical tilt angle and the actual size of the circular reference object, the first size of the first test face is determined.The actual size of the circular reference object, the tilt angle and the pixel value in the first test face image are used to determine the first size of the first test face in the embodiment of the present application, which simplifies the measurement operation steps in the prior art and improves the accuracy of measuring the size of the face.

The application discloses a kind of concrete apparent bubble defect quantitative analysis method and system, it is related to computer vision technical field, method includes: collecting hardened concrete surface sample image;Using first semantic segmentation model to sample image is segmented, obtains concrete area mask;Hardened concrete surface sample image is cropped, and the image after cropping is input to second semantic segmentation model and depth estimation model, obtains bubble and the segmentation mask of size reference object and the depth information diagram of concrete area;Plane fitting is carried out to concrete surface using depth information diagram, and perspective correction is carried out;According to the proportional relationship of the pixel area of corrected size reference object mask and real size, or according to the proportional relationship of the real area of concrete area and pixel area, the real world area of bubble is calculated, and the equivalent diameter of bubble is calculated.The application realizes non-contact high-precision quantification.

An object reconstruction method includes obtaining a plurality of target images and real poses corresponding to a case in which a camera captures the target images. Based on the target images and the real poses, a sparse point cloud whose size is consistent with a real size of a target object is constructed and a three-dimensional (3D) model of the target object is generated based on the sparse point cloud. A distribution size of the sparse point cloud generated based on the first poses is consistent with the real size of the target object such that the reconstructed 3D model is more realistic, and does not include a size distortion.

The embodiment of the application provides a camera external parameter determination method and device and an external parameter calibration system. The real size of a reference object, the imaging size image of the reference object and the internal parameter of a camera to be calibrated are acquired, wherein the surface of the reference object facing the camera to be calibrated at each spatial position is a spherical surface with the same curvature radius. When measuring the real size and the imaging size of the reference object, only the radius, i.e. the imaging radius and the real radius, is involved. When the real size and the imaging size need to be corresponded in the subsequent process, only the radii need to be corresponded. According to the Gaussian imaging theorem, under the condition that the internal parameter of the camera to be calibrated is known, the distance between the target position and each spatial position can be determined according to the reference object image. According to the three-point positioning rule, the target position can be determined. The deflection angle of the camera to be calibrated can be determined according to the target position, the spatial position of the reference object and each imaging size, thereby improving the calibration efficiency of the camera.

The application belongs to the technical field of additive manufacturing, and particularly relates to an additive manufacturing method based on partition process optimization and compensation, which comprises the following steps: S1, classifying parts and dividing different parts into different printing areas; S2, separately configuring process parameters for the lower surface area, layer by layer model slicing for the compensation area, and judging whether any model slice needs compensation; S3, separately printing multiple different areas based on respective process parameters; S4, performing structural bias compensation and optical compensation on the printed model based on the actual size of the part; and S5, detecting the upper surface of the part as a machining reference surface. The method of the application can meet the use requirements of high-end manufacturing for precision parts without additional support, not only reducing the consumption of metal powder, but also avoiding damage to the surface of the part in the support removal process, and improving manufacturing efficiency.