Alibaba Group Holding Limited

Fujitsu Corporation

Beijing Orient Institute of Measurement and Test

Pan Pan

Yuan He

Jun Sun

Bin Wang

Rong Jin

Jingming Yu

Xiaoduan Feng

Satoshi Naoi

Yun Zheng

Yinghui Xu

Min Li

Yi Sun

Shufu Xie

Wei Jia Liu

Xiansheng Hua

Jie Lin

Yanhao Zhang

Yuan Shen

Xuwei Hou

Jingjing Li

Qianjuan Wang

Jiaolan Yu

Shuqiang Wang

Zhongwei Wang

Jianzhen Cai

Yazhen Tong

Xiaoding Huang

Yingya Zhang

Jian Cao

Chenwei Xie

Bang Zhang

Embodiments of this specification provide methods and apparatuses for processing images, devices, and storage media. A method includes: obtaining an image for processing; generating a first mask image corresponding to the image based on a machine-learning model and determining whether the image has a foreground object; in response to determining that the image has the foreground object, setting pixels corresponding to the foreground object to a first grayscale value range, and setting pixels corresponding to non-foreground objects in the first mask image to a second grayscale value range; determining an outline corresponding to the foreground object in the image according to a grayscale value range difference between the first grayscale value range of the foreground object and the second grayscale value range of the non-foreground objects in the first mask image; and sending, to a client device for display, the image with the determined outline for interaction by a user.

Product release method and image processing method, apparatus, device, and storage medium

A four-terminal-pair AC quantum resistance dissemination bridge and related methods are provided. The bridge includes: a supply transformer IVD, a Kelvin branch A, a Wagner branch A, the first and second current sources A, A, an injection inductive voltage divider A, a ratio transformer IVD, the first and second four-terminal AC resistor connection points Z, Z, chokes H, and null indicators D. An isolated inductive winding LO is wound along the ratio transformer IVDand supplies excitation current to primary winding of injection inductive voltage divider Ato avoid the mutual influence among various balance networks and rapid balance of the bridge can be realized. By changing turn ratio of primary winding Land secondary winding Lof the second inductive voltage divider T, the phase shift can be realized through only one set of capacitors for imaginary part error compensation, the bridge with multiple frequency points can be obtained.

Four-terminal-pair alternating current quantum resistance dissemination bridge and related method

The present disclosure discloses an image processing method, apparatus, and a non-transitory computer readable medium. The method can includes: acquiring a three-dimensional (3D) model and original texture images of an object, wherein the original texture images are acquired by an imaging device; determining a mapping relationship between the 3D model and the original texture images of the object; determining, among the original texture images, a subset of texture images associated with a first perspective of the imaging device; splicing the subset of texture images into a spliced texture image corresponding to the first perspective; and mapping the spliced texture image to the 3D model according to the mapping relationship.

Image processing method, apparatus, and storage medium

Presenting information on similar objects relative to a target object is disclosed, including: obtaining a plurality of video frames; determining a target object in the plurality of video frames using a tracking recognition technique; determining time slice information corresponding to the target object; using the time slice information corresponding to the target object to determine one or more similar objects relative to the target object; receiving an indication to present information on the one or more similar objects relative to the target object; and outputting the information on the one or more similar objects relative to the target object.

Presenting information on similar objects relative to a target object from a plurality of video frames

A data processing method includes determining feature points in first point cloud data and feature points in second point cloud data, the first point cloud data and the second point cloud data being used for representing different parts of a same object; performing feature matching between the first point cloud data and the second point cloud data to determine feature points satisfying feature matching condition(s) between the first point cloud data and the second point cloud data, and form a plurality of feature point pairs; determining a transformation matrix in which spatial distances between feature points in one or more feature point pairs of the plurality of feature point pairs conform to a proximity condition; and performing coordinate transformation on the one or more feature point pairs using the transformation matrix to register the first point cloud data with the second point cloud data.

Data processing method, apparatus, system and storage media

A method, an apparatus, a device and a computer storage media for point cloud meshing are provided. The method includes performing a mesh reconstruction on point cloud data corresponding to a target object to obtain a reconstruction model for characterizing a surface contour of the target object; performing image registration on the reconstruction model with respect to a standard model corresponding to the target object; determining a mesh portion in the registered reconstruction model that does not overlap with the standard model; and removing the determined mesh portion from the registered reconstruction model to obtain a resulting reconstruction model of the target object. The point cloud meshing method repairs a hole structure of an object surface without the need of post-editing manually, and thus is able to improve the efficiency of repairing the hole structure of the object surface.

Point cloud meshing method, apparatus, device and computer storage media

Type prediction method, apparatus and electronic device for recognizing an object in an image are disclosed. The method may include processing an image to be processed using a full image recognition technique to obtain a first type prediction result of an object in the image to be processed; processing a subject area of the image to be processed using a feature recognition technique to obtain a second type prediction result of an object of the subject area; determining whether the first type prediction result matches the second type prediction result; if the first type prediction result matches the second type prediction result, determining a type of the object of the image to be processed to be the first type prediction result or the second type prediction result.

Type prediction method, apparatus and electronic device for recognizing an object in an image

A method and a device for extracting a distorted straight line from an image. The method includes performing a line segment detection process on the image; for each line segment detected, finding adjacent line segments having a low non-collinear degree with a current line segment, so as to combine them together to obtain one or more line segment combinations; and extracting the distorted straight line according to the line segment combination.

Method and device for extracting distorted straight line from image

An apparatus for and a method of processing a document image are provided. The apparatus comprises: an estimation unit for estimating a brightness image from the document image; and a correction unit for correcting the brightness image by using brightness values of at least a part of edge pixels which lie on or in the adjacency of edges of the brightness image in parallel with x direction, wherein directions of neighboring two edges of the brightness image are set to be x, y directions respectively, and wherein compared with x direction, brightness values of pixels of the brightness image change relatively slightly or do not change along y direction; wherein the correction unit performs interpolation on a straight line extending along y direction by using the brightness values of the edge pixels on the straight line, thereby correcting brightness values of other pixels on the straight line.

Apparatus for and method of processing document image

The invention provides an apparatus and method for extracting a boundary of an object in an image and an electronic device. The apparatus includes: a position determining unit, configured to determine a start point and an end point of a boundary of an object in an image and to determine a position of a reference point relevant to the start point and the end point; a first direction determining unit, configured to determine a first direction of the boundary; a gradient map obtaining unit, configured to obtain a gradient map of a first region; a gradient attenuating unit, configured to attenuate in the gradient map the gradients of a second region; and an extracting unit, configured to extract a boundary of an object. The technology of the invention can improve the accuracy of boundary extracting, and can be applied in the field of image processing.

Apparatus, method for extracting boundary of object in image, and electronic device thereof

An apparatus for and a method of processing a document image are provided. The method comprises: generating a luminance component image from the document image; estimating a luminance image from the luminance component image; and adjusting the luminance component image according to the estimated luminance image. Luminance values of pixels at least in horizontal edge areas of the luminance component image are estimated according to luminance values of pixels in a part of background of the luminance component image. If the estimated luminance values are acceptable according to a predetermined criterion, the luminance image is estimated according to the estimated luminance values. If the estimated luminance values are unacceptable, the luminance image is estimated by using the largest one of the luminance values of the pixels in each column of pixels in the luminance component image as the luminance values of all of the pixels in the column.

Apparatus and method for processing document image to estimate luminance image from luminance component image adjusted according to estimated or largest luminance values and predetermined criterion

The disclosure provides an image processing device, image processing method, scanner and storage medium. The image processing device is used for tracing a boundary of an object image in an image, the boundary being continuous and the rate of change in slope between adjacent points on the boundary being slow. The image processing device includes: a boundary estimation unit, adapted to estimate the location of the boundary of the object image; an interfering gradient processing unit, adapted to process an interfering gradient near the estimated boundary, so as to reduce the interfering gradient or remove the interfering gradient from the image; and a boundary tracing unit, adapted to trace the boundary in the image having the interfering gradient processed. By using the technique of the disclosure, the accuracy of tracing a boundary of an image is improved significantly.

Image processing device, image processing method, scanner and storage medium

The present invention discloses a method and apparatus for correcting a corner point of an image and an image processing device. The method includes: determining first candidate corner points of an initial corner point in a first local region; obtaining information related to the image in a second local region; selecting, among the first candidate corner points of the initial corner point, the first candidate corner points meeting a predetermined condition, as second candidate corner points of the initial corner point according to the information; and correcting the initial corner point using the second candidate corner points of the initial corner point. The apparatus is configured to perform the processes of the method. The image processing device includes the apparatus for correcting a corner point of an image. With the technology, a roughly detected corner point can be corrected.

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Beijing, China

Pan Pan