Patents by Inventor Lilong WANG
Lilong WANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Method, device, apparatus, and medium for training recognition model and recognizing fundus features
Patent number: 11967071Abstract: The present disclosure provides a method, device, computer apparatus, and storage medium for training recognition model and recognizing fundus features. The method includes: obtaining a color fundus image sample associated with a label value, inputting the color fundus image sample into a preset recognition model containing initial parameters; extracting a red channel image; inputting the red channel image into the first convolutional neural network to obtain a first recognition result and a feature image of the red channel image; combining the color fundus image sample with the feature image to generate a combined image, and inputting the combined image into the second convolutional neural network to obtain a second recognition result; obtaining a total loss value through a loss function, and when the total loss value is less than or equal to a preset loss threshold, ending the training of the preset recognition model.Type: GrantFiled: November 11, 2019Date of Patent: April 23, 2024Assignee: PING AN TECHNOLOGY (SHENZHEN) CO., LTD.Inventors: Rui Wang, Junhuan Zhao, Lilong Wang, Yuanzhi Yuan, Chuanfeng Lv -
Publication number: 20230369960Abstract: The present disclosure provides a zero-crossing state detection device for a converter and a converter device. The converter includes a first type of power switch electrically coupled between an input terminal and a switch node, a second type of power switch electrically coupled between the switch node and a ground terminal, and an inductor electrically coupled between the switch node and an output terminal. The zero-crossing state detection device includes: a zero-crossing state indication circuit, which is configured to generate an indication signal indicating the zero-crossing state of the inductor current flowing through the inductor, based on a voltage at the switch node after the second type of power switch is turned off and before the first type of power switch is turned on, according to first and second driving signals respectively applied to the first type of power switch and the second type of power switch.Type: ApplicationFiled: January 17, 2023Publication date: November 16, 2023Applicant: Shanghai Hanmai Electronic Technology Co., LtdInventors: Xiaohui WU, Lilong WANG
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Publication number: 20230246537Abstract: A method for controlling a buck converter is provided. The method includes monitoring an inductor current flowing through an inductor in the buck converter. The method includes controlling the buck converter to operate in a pulse frequency modulation (PFM) mode with intermittent conduction if the inductor current experiences a plurality of cross-zero periods. The method further includes adjusting a power consumption of a component in the buck converter according to the plurality of cross-zero periods of the inductor current, when the buck converter is operating in the PFM mode.Type: ApplicationFiled: January 11, 2023Publication date: August 3, 2023Applicant: Shanghai Hanmai Electronic Technology Co., LtdInventors: Xiaohui WU, Lilong WANG
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Publication number: 20230154142Abstract: A fundus color photo image grading method and apparatus, a computer device, and a storage medium are provided. The method comprises: obtaining an original image, enhancing the original image, and obtaining a target image (S100); performing color processing on the original image and the target image, and respectively obtaining a first processed image and a second processed image (S200); using a pre-trained grading model to perform processing on the first processed image and the second processed image, and obtaining a target grading result (S300). Multi-color space first and second processed images act as model inputs, and prediction is performed by means of fused features on a whole image scale to implement the classification and grading of common fundus color photo diseases, so as to automatically screen fundus color photos with pathological changes, achieve a pre-screening effect, and improve operational efficiency.Type: ApplicationFiled: September 27, 2020Publication date: May 18, 2023Inventors: Guanzheng WANG, Lilong WANG
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Publication number: 20220415087Abstract: The application relates to the technical field of artificial intelligence, and provides a method, device, electronic equipment and storage medium for positioning macular center in fundus images. The method comprises: acquiring a detection result of the fundus image detection model, wherein the detection result includes an optic disc area, and a first detection block and a first confidence score corresponding to the optic disc area, and a macular area, and a second detection block and a second confidence score corresponding to the macular area; calculating a center point coordinate of the optic disc area according to the first detection block, and calculating a center point coordinate of the macular area according to the second detection block; identifying whether the to-be-detected fundus image is a left eye fundus image or a right eye fundus image, and correcting a center point of the macular area using different correction models.Type: ApplicationFiled: May 29, 2020Publication date: December 29, 2022Inventors: Ge Li, Rui Wang, Lilong Wang, Yijun Tang, Meng Zhang, Peng Gao
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Method, Device, Apparatus, and Medium for Training Recognition Model and Recognizing Fundus Features
Publication number: 20220414868Abstract: The present disclosure provides a method, device, computer apparatus, and storage medium for training recognition model and recognizing fundus features. The method includes: obtaining a color fundus image sample associated with a label value, inputting the color fundus image sample into a preset recognition model containing initial parameters; extracting a red channel image; inputting the red channel image into the first convolutional neural network to obtain a first recognition result and a feature image of the red channel image; combining the color fundus image sample with the feature image to generate a combined image, and inputting the combined image into the second convolutional neural network to obtain a second recognition result; obtaining a total loss value through a loss function, and when the total loss value is less than or equal to a preset loss threshold, ending the training of the preset recognition model.Type: ApplicationFiled: November 11, 2019Publication date: December 29, 2022Inventors: Rui Wang, Junhuan Zhao, Lilong Wang, Yuanzhi Yuan, Chuanfeng Lv -
Publication number: 20220245803Abstract: An image enhancement processing method includes: acquiring an initial image, preprocessing the initial image, and acquiring an original feature image containing a target feature; performing an edge detection on the original feature image using an edge detection algorithm to obtain an original gradient image, obtaining a statistics ring based on the original feature image, and performing an iterative process on the statistics ring; obtaining a to-be-processed image based on an inner diameter of on the statistics ring, and determining to-be-processed parameters of the to-be-processed image: acquiring a standard image corresponding to the target feature, determining a standard area corresponding to the standard image, and acquiring standard image parameters corresponding to the standard area; performing a migration process on the to-be-processed image to obtain a migration image; and performing a restricted contrast adaptive histogram equalization process on the migration image to obtain a target enhanced image.Type: ApplicationFiled: August 30, 2020Publication date: August 4, 2022Inventors: Dongyi Fan, Rui Wang, Lilong Wang
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Publication number: 20220108449Abstract: A method and device for neural network-based optical coherence tomography (OCT) image lesion detection, and a medium are provided. The method includes the following. An OCT image is obtained. The OCT image is inputted into a lesion-detection network model. A position, a category score, and a positive score of each lesion box in the OCT image are outputted through the lesion-detection network model. A lesion detection result of the OCT image is obtained according to the position, the category score, and the positive score of each lesion box. The lesion-detection network model includes a category detection branch configured to obtain, for each of the anchor boxes, a position and a category score of the anchor box, and a lesion positive score regression branch configured to obtain, for each of the anchor boxes, a positive score of whether the anchor box belongs to a lesion, to reflect severity of lesion positive.Type: ApplicationFiled: December 15, 2021Publication date: April 7, 2022Applicant: Ping An Technology (Shenzhen) Co., Ltd.Inventors: Dongyi FAN, Lilong WANG, Rui WANG, Guanzheng WANG, Chuanfeng LV
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Patent number: 10482602Abstract: A system and method for image segmentation are provided. A three-dimensional image data set representative of a region including at least one airway may be acquired. The data set may include a plurality of voxels. A first-level seed within the region may be identified. A first-level airway within the region may be identified based on the first-level seed. A second-level airway may be identified within the region based on the first-level airway. The first-level airway and the second-level airway may be fused to form an airway tree.Type: GrantFiled: May 6, 2019Date of Patent: November 19, 2019Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Lilong Wang, Lijia Wang, Yufei Mao, Xiaolin Meng, Xiaodong Wang, Cheng Li
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Publication number: 20190259161Abstract: A system and method for image segmentation are provided. A three-dimensional image data set representative of a region including at least one airway may be acquired. The data set may include a plurality of voxels. A first-level seed within the region may be identified. A first-level airway within the region may be identified based on the first-level seed. A second-level airway may be identified within the region based on the first-level airway. The first-level airway and the second-level airway may be fused to form an airway tree.Type: ApplicationFiled: May 6, 2019Publication date: August 22, 2019Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Lilong WANG, Lijia WANG, Yufei MAO, Xiaolin MENG, Xiaodong WANG, Cheng LI
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Patent number: 10282844Abstract: A system and method for image segmentation are provided. A three-dimensional image data set representative of a region including at least one airway may be acquired. The data set may include a plurality of voxels. A first-level seed within the region may be identified. A first-level airway within the region may be identified based on the first-level seed. A second-level airway may be identified within the region based on the first-level airway. The first-level airway and the second-level airway may be fused to form an airway tree.Type: GrantFiled: May 5, 2016Date of Patent: May 7, 2019Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Lilong Wang, Lijia Wang, Yufei Mao, Xiaolin Meng, Xiaodong Wang, Cheng Li
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Patent number: 10181191Abstract: A method and system for image processing is provided. The technique includes acquiring data related to the processing, performing a pre-processing of the data, performing a segmentation of a subject, performing a post-processing of the result of the segmentation and managing storage of the data. The post-process includes a calibrating and a rendering of the data.Type: GrantFiled: October 31, 2015Date of Patent: January 15, 2019Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Lilong Wang, Jieyan Ma, Jiyong Wang, Ce Wang, Lianghai Jin, Zhao Zhang, Fei Wang, Cheng Li, Qi Duan, Wenqing Liu, Chuanfeng Lyu, Jie Qu, Yong Luo, Liangliang Pan, Rui Wang, Shili Cao, Yufei Mao, Bin Tan, Wenhua Wang, Shuai Wang, Fanfan Zhang
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Publication number: 20170249744Abstract: A method and system for image processing is provided. The technique includes acquiring data related to the processing, performing a pre-processing of the data, performing a segmentation of a subject, performing a post-processing of the result of the segmentation and managing storage of the data. The post-process includes a calibrating and a rendering of the data.Type: ApplicationFiled: October 31, 2015Publication date: August 31, 2017Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Lilong WANG, Jieyan MA, Jiyong WANG, Ce WANG, Lianghai JIN, Zhao ZHANG, Fei WANG, Cheng LI, Qi DUAN, Wenqing LIU, Chuanfeng LYU, Jie QU, Yong LUO, Liangliang PAN, Rui WANG, Shili CAO, Yufei MAO, Bin TAN, Wenhua WANG, Shuai WANG, Fanfan ZHANG
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Publication number: 20170206662Abstract: A system and method for image segmentation are provided. A three-dimensional image data set representative of a region including at least one airway may be acquired. The data set may include a plurality of voxels. A first-level seed within the region may be identified. A first-level airway within the region may be identified based on the first-level seed. A second-level airway may be identified within the region based on the first-level airway. The first-level airway and the second-level airway may be fused to form an airway tree.Type: ApplicationFiled: May 5, 2016Publication date: July 20, 2017Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Lilong WANG, Lijia WANG, Yufei MAO, Xiaolin MENG, Xiaodong WANG, Cheng LI