The demand for image retrieval with text manipulation exists in many fields, such as e-commerce and Internet search. Deep metric learning methods are used by most researchers to calculate the similarity between the qu...The demand for image retrieval with text manipulation exists in many fields, such as e-commerce and Internet search. Deep metric learning methods are used by most researchers to calculate the similarity between the query and the candidate image by fusing the global feature of the query image and the text feature. However, the text usually corresponds to the local feature of the query image rather than the global feature. Therefore, in this paper, we propose a framework of image retrieval with text manipulation by local feature modification(LFM-IR) which can focus on the related image regions and attributes and perform modification. A spatial attention module and a channel attention module are designed to realize the semantic mapping between image and text. We achieve excellent performance on three benchmark datasets, namely Color-Shape-Size(CSS), Massachusetts Institute of Technology(MIT) States and Fashion200K(+8.3%, +0.7% and +4.6% in R@1).展开更多
A new method ,which is called image manipulation, is introduced to analyze the cavitation of flow field for the first time. As the complexity of the cavitation development must be considering, only the method of ima...A new method ,which is called image manipulation, is introduced to analyze the cavitation of flow field for the first time. As the complexity of the cavitation development must be considering, only the method of image manipulation can calculate the strength of the cavitation more accurately. This method based on wavelet transform is used to eliminate the noise. The area of the cavitations is deduced to serve as the strength of cavitation. The method is applied in an example of inducer's rotating cavitation. The results show that using image manipulation can get the accurate date of cavitation with ease,and the reason of the inducer shaft's vibration is uncovered clearly.展开更多
Currently,in multimedia and image processing technologies, implementing special kinds of image manipulation operations by dealing directly with the compressed image is a work worthy to be concerned with. Theoretical a...Currently,in multimedia and image processing technologies, implementing special kinds of image manipulation operations by dealing directly with the compressed image is a work worthy to be concerned with. Theoretical analysis and experiment haVe indicated that some kinds of image processing works can be done very well by dealing with compressed image. In Ans paper, we give some efficient image manipulation operation algorithms operating on the compressed image data. These algorithms have advantages in computing complexity, storage space retirement and image quality.展开更多
Ninety-four patients with lumbar intervertebral disc herniation were enrolled in this study. Of these, 48 were treated with Feng＇s Spinal Manipulation, hot fomentation, and bed rest （treatment group）. The remaining...Ninety-four patients with lumbar intervertebral disc herniation were enrolled in this study. Of these, 48 were treated with Feng＇s Spinal Manipulation, hot fomentation, and bed rest （treatment group）. The remaining 46 patients were treated with hot fomentation and bed rest only （control group）. After 3 weeks of treatment, clinical parameters including the angle of straight-leg raising, visual analogue scale pain score, and Japanese Orthopaedic Association score for low back pain were improved. The treatment group had significantly better improvement in scores than the control group. Magnetic resonance myelography three-dimensional reconstruction imaging of the vertebral canal demonstrated that filling of the compressed nerve root sleeve with cerebrospinal fluid increased significantly in the treatment group. The diameter of the nerve root sleeve was significantly larger in the treatment group than in the control group. However, the sagittal diameter index of the herniated nucleus pulposus and the angle between the nerve root sleeve and the thecal sac did not change significantly in either the treatment or control groups. The effectiveness of Feng＇s Spinal Manipulation for the treatment of symptoms associated with lumbar intervertebral disc herniation may be attributable to the relief of nerve root compression, without affecting the herniated nucleus pulposus or changing the morphology or position of the nerve root.展开更多
BACKGROUND Spinal manipulation therapy(SMT)has been widely used worldwide to treat musculoskeletal diseases,but it can cause serious adverse events.Spinal epidural hematoma(SEH)caused by SMT is a rare emergency that c...BACKGROUND Spinal manipulation therapy(SMT)has been widely used worldwide to treat musculoskeletal diseases,but it can cause serious adverse events.Spinal epidural hematoma(SEH)caused by SMT is a rare emergency that can cause neurological dysfunction.We herein report three cases of SEH after SMT.CASE SUMMARY The first case was a 30-year-old woman who experienced neck pain and numbness in both upper limbs immediately after SMT.Her symptoms persisted after 3 d of conservative treatment,and she was admitted to our hospital.Magnetic resonance imaging(MRI)demonstrated an SEH,extending from C6 to C7.The second case was a 55-year-old man with sudden back pain 1 d after SMT,numbness in both lower limbs,an inability to stand or walk,and difficulty urinating.MRI revealed an SEH,extending from T1 to T3.The third case was a 28-year-old man who suddenly developed symptoms of numbness in both lower limbs 4 h after SMT.He was unable to stand or walk and experienced mild back pain.MRI revealed an SEH,extending from T1 to T2.All three patients underwent surgery after failed conservative treatment.The three cases recovered to ASIA grade E on day 5,1 wk,and day 10 after surgery,respectively.All patients returned to normal after 3 mo of follow-up.CONCLUSION SEH caused by SMT is very rare,and the condition of each patient should be evaluated in full detail before operation.SEH should be diagnosed immediately and actively treated by surgery.展开更多
Conventional robotic manipulators consist of touch and vision sensors in order to pick and place differently shaped objects.Due to the technology development and degrading sensors over a long period,the stereo vision ...Conventional robotic manipulators consist of touch and vision sensors in order to pick and place differently shaped objects.Due to the technology development and degrading sensors over a long period,the stereo vision technique has become a promising alternative.In this study,a low-cost stereo vision-based system,and a gripper to be placed at the end of the robot arm(Fanuc M10 iA/12)are developed for position and orientation estimation of robotic manipulators to pick and place different shaped objects.The stereo vision system developed in this research is used to estimate the position(X,Y,Z),orientation(P_(y))of the Center of Volume of four standard objects(cube,cuboid,cylinder,and sphere)whereas the robot arm with the gripper is used to mechanically pick and place the objects.The stereo vision system is placed on the movable robot arm,and it consists of two cameras to capture two 2D views of a stationary object to derive 3D depth information in 3D space.Moreover,a graphical user interface is developed to train a linear regression model,live predict the coordinates of the objects,and check the accuracy of the predicted data.The graphical user interface can also send predicted coordinates and angles to the gripper and the robot arm.The project is facilitated with python programming language modules and image processing techniques.Identification of the stationary object and estimation of its coordinates is done using image processing techniques.The final product can be identified as a device that converts conventional robot arms without an image processing vision system into a highly precise and accurate robot arm with an image processing vision system.Experimental studies are performed to test the efficiency and effectiveness of used techniques and the gripper prototype.Necessary actions are taken to minimize the errors in position and orientation estimation.In addition,as a future implementation,an embedded system will be developed with a user-friendly software interface to install the vision system into the Fanuc M10 iA/12 robot arm and will upgrade the system to a device that can be implemented with any kind of customized robot arms available in the industry.展开更多
基金Foundation items:Shanghai Sailing Program,China (No. 21YF1401300)Shanghai Science and Technology Innovation Action Plan,China (No.19511101802)Fundamental Research Funds for the Central Universities,China (No.2232021D-25)。
文摘The demand for image retrieval with text manipulation exists in many fields, such as e-commerce and Internet search. Deep metric learning methods are used by most researchers to calculate the similarity between the query and the candidate image by fusing the global feature of the query image and the text feature. However, the text usually corresponds to the local feature of the query image rather than the global feature. Therefore, in this paper, we propose a framework of image retrieval with text manipulation by local feature modification(LFM-IR) which can focus on the related image regions and attributes and perform modification. A spatial attention module and a channel attention module are designed to realize the semantic mapping between image and text. We achieve excellent performance on three benchmark datasets, namely Color-Shape-Size(CSS), Massachusetts Institute of Technology(MIT) States and Fashion200K(+8.3%, +0.7% and +4.6% in R@1).
文摘A new method ,which is called image manipulation, is introduced to analyze the cavitation of flow field for the first time. As the complexity of the cavitation development must be considering, only the method of image manipulation can calculate the strength of the cavitation more accurately. This method based on wavelet transform is used to eliminate the noise. The area of the cavitations is deduced to serve as the strength of cavitation. The method is applied in an example of inducer's rotating cavitation. The results show that using image manipulation can get the accurate date of cavitation with ease,and the reason of the inducer shaft's vibration is uncovered clearly.
文摘Currently,in multimedia and image processing technologies, implementing special kinds of image manipulation operations by dealing directly with the compressed image is a work worthy to be concerned with. Theoretical analysis and experiment haVe indicated that some kinds of image processing works can be done very well by dealing with compressed image. In Ans paper, we give some efficient image manipulation operation algorithms operating on the compressed image data. These algorithms have advantages in computing complexity, storage space retirement and image quality.
基金supported by grants from the Key Topics of China Traditional Chinese Medicine Scientific Research Project,General Logistics Department of Chinese PLA,No.10ZYZ125the Army Medical Science and Technology the125Scientific Research Projects,Chinese PLA,No.AKJ11J004
文摘Ninety-four patients with lumbar intervertebral disc herniation were enrolled in this study. Of these, 48 were treated with Feng＇s Spinal Manipulation, hot fomentation, and bed rest （treatment group）. The remaining 46 patients were treated with hot fomentation and bed rest only （control group）. After 3 weeks of treatment, clinical parameters including the angle of straight-leg raising, visual analogue scale pain score, and Japanese Orthopaedic Association score for low back pain were improved. The treatment group had significantly better improvement in scores than the control group. Magnetic resonance myelography three-dimensional reconstruction imaging of the vertebral canal demonstrated that filling of the compressed nerve root sleeve with cerebrospinal fluid increased significantly in the treatment group. The diameter of the nerve root sleeve was significantly larger in the treatment group than in the control group. However, the sagittal diameter index of the herniated nucleus pulposus and the angle between the nerve root sleeve and the thecal sac did not change significantly in either the treatment or control groups. The effectiveness of Feng＇s Spinal Manipulation for the treatment of symptoms associated with lumbar intervertebral disc herniation may be attributable to the relief of nerve root compression, without affecting the herniated nucleus pulposus or changing the morphology or position of the nerve root.
基金Supported by Chinese People’s Liberation Army Medical Technology Youth Training Program,No.20QNPY071.
文摘BACKGROUND Spinal manipulation therapy(SMT)has been widely used worldwide to treat musculoskeletal diseases,but it can cause serious adverse events.Spinal epidural hematoma(SEH)caused by SMT is a rare emergency that can cause neurological dysfunction.We herein report three cases of SEH after SMT.CASE SUMMARY The first case was a 30-year-old woman who experienced neck pain and numbness in both upper limbs immediately after SMT.Her symptoms persisted after 3 d of conservative treatment,and she was admitted to our hospital.Magnetic resonance imaging(MRI)demonstrated an SEH,extending from C6 to C7.The second case was a 55-year-old man with sudden back pain 1 d after SMT,numbness in both lower limbs,an inability to stand or walk,and difficulty urinating.MRI revealed an SEH,extending from T1 to T3.The third case was a 28-year-old man who suddenly developed symptoms of numbness in both lower limbs 4 h after SMT.He was unable to stand or walk and experienced mild back pain.MRI revealed an SEH,extending from T1 to T2.All three patients underwent surgery after failed conservative treatment.The three cases recovered to ASIA grade E on day 5,1 wk,and day 10 after surgery,respectively.All patients returned to normal after 3 mo of follow-up.CONCLUSION SEH caused by SMT is very rare,and the condition of each patient should be evaluated in full detail before operation.SEH should be diagnosed immediately and actively treated by surgery.
文摘Conventional robotic manipulators consist of touch and vision sensors in order to pick and place differently shaped objects.Due to the technology development and degrading sensors over a long period,the stereo vision technique has become a promising alternative.In this study,a low-cost stereo vision-based system,and a gripper to be placed at the end of the robot arm(Fanuc M10 iA/12)are developed for position and orientation estimation of robotic manipulators to pick and place different shaped objects.The stereo vision system developed in this research is used to estimate the position(X,Y,Z),orientation(P_(y))of the Center of Volume of four standard objects(cube,cuboid,cylinder,and sphere)whereas the robot arm with the gripper is used to mechanically pick and place the objects.The stereo vision system is placed on the movable robot arm,and it consists of two cameras to capture two 2D views of a stationary object to derive 3D depth information in 3D space.Moreover,a graphical user interface is developed to train a linear regression model,live predict the coordinates of the objects,and check the accuracy of the predicted data.The graphical user interface can also send predicted coordinates and angles to the gripper and the robot arm.The project is facilitated with python programming language modules and image processing techniques.Identification of the stationary object and estimation of its coordinates is done using image processing techniques.The final product can be identified as a device that converts conventional robot arms without an image processing vision system into a highly precise and accurate robot arm with an image processing vision system.Experimental studies are performed to test the efficiency and effectiveness of used techniques and the gripper prototype.Necessary actions are taken to minimize the errors in position and orientation estimation.In addition,as a future implementation,an embedded system will be developed with a user-friendly software interface to install the vision system into the Fanuc M10 iA/12 robot arm and will upgrade the system to a device that can be implemented with any kind of customized robot arms available in the industry.
