公开(公告)号：US11681036B2

公开(公告)日：2023-06-20

申请号：US16958339

申请日：2017-12-28

Applicant: NEC CORPORATION

Inventor： Shreya Sharma ,  Yuzo Senda ,  Hirofumi Aoki ,  Kenta Senzaki

IPC: G01S13/90 ,  G01S7/40 ,  G01S7/41 ,  G06N20/10

CPC classification number: G01S13/9027 ,  G01S7/40 ,  G01S7/417 ,  G06N20/10

Abstract: An object is to provide an image processing apparatus capable of appropriately distinguishing various object types. An image processing apparatus (1C) comprising: detector means (11) for detecting objects in an input SAR image and generating object chips; projection calculator means (12) for calculating projection information of each object using SAR geometry; feature learner means (14) for learning, for each object, a relation between an object chip and its projection information, and thereby generating learnt features of object chips; and classifier means (15) for classifying object chips into classes based on the learnt features of object chips.

公开(公告)号：US12217490B2

公开(公告)日：2025-02-04

申请号：US17603404

申请日：2019-04-17

Applicant: NEC Corporation

Inventor： Shreya Sharma ,  Masato Toda

IPC: G06V10/774 ,  G06V10/44 ,  G06V10/48

Abstract: An object is to provide an image processing apparatus capable of appropriately distinguishing changes in an area that have occurred over a period of time. An image processing apparatus may include: a difference image generator means to generate a difference image from input SAR images; an intensity change feature extractor means to extract an intensity-based change feature from the difference image; a speckle change feature extractor means to extract speckle-based change features from the input SAR images; a combined feature extractor means to combine the intensity change feature and the speckle change feature to generate a complete representation of changes; and a classifier means to classify the pixels in several change classes using the combined feature and output a change map.