Pub Date : 2013-12-01DOI: 10.1109/IC3D.2013.6732091
M. Vlaminck, L. Jovanov, P. V. Hese, B. Goossens, W. Philips, A. Pižurica
According to the World Health Organisation, 285 million people live with a visual impairment. Despite the fact that many efforts have been made recently, there is still no computer-guided system that is reliable, robust and practical enough to help these people to increase their mobility. Motivated by this shortcoming, we propose a novel obstacle detection system to assist the visually impaired. This work mainly focuses on indoor environments and performs classification of typical obstacles that emerge in these situations, using a 3D sensor. A total of four classes of obstacles are considered: walls, doors, stairs and a residual class (which covers loose obstacles and bumpy parts on the floor). The proposed system is very reliable in terms of the detection accuracy. In a realistic experiment, stairs are detected with 100% true positive rate and 8.6% false positive rate, while doors are detected with 86.4% true positive rate and 0% false positive rate.
{"title":"Obstacle detection for pedestrians with a visual impairment based on 3D imaging","authors":"M. Vlaminck, L. Jovanov, P. V. Hese, B. Goossens, W. Philips, A. Pižurica","doi":"10.1109/IC3D.2013.6732091","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732091","url":null,"abstract":"According to the World Health Organisation, 285 million people live with a visual impairment. Despite the fact that many efforts have been made recently, there is still no computer-guided system that is reliable, robust and practical enough to help these people to increase their mobility. Motivated by this shortcoming, we propose a novel obstacle detection system to assist the visually impaired. This work mainly focuses on indoor environments and performs classification of typical obstacles that emerge in these situations, using a 3D sensor. A total of four classes of obstacles are considered: walls, doors, stairs and a residual class (which covers loose obstacles and bumpy parts on the floor). The proposed system is very reliable in terms of the detection accuracy. In a realistic experiment, stairs are detected with 100% true positive rate and 8.6% false positive rate, while doors are detected with 86.4% true positive rate and 0% false positive rate.","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"204 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115719821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-12-01DOI: 10.1109/IC3D.2013.6732078
C. Varekamp, K. Hinnen, W. Simons
We propose a supervised learning method for detecting disparity estimation errors in a disparity map. A classifier is trained using features of low computational complexity. The proposed method can in principle be used to improve the performance of any disparity estimation algorithm. The results presented in this paper are therefore of general interest for those working on disparity estimation. In addition, our method solves the problem of needing a large variation of input stereo video with ground truth disparity. In our approach, we visually inspect a disparity map and manually annotate blocks that appear to be errors and blocks that appear to be correct. We then train a classifier to do this work automatically. Recursive predictions are used to correct errors. Our manual annotation approach has the advantage that `ground truth' data is generated via low-cost annotation of arbitrary stereo video.
{"title":"Detection and correction of disparity estimation errors via supervised learning","authors":"C. Varekamp, K. Hinnen, W. Simons","doi":"10.1109/IC3D.2013.6732078","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732078","url":null,"abstract":"We propose a supervised learning method for detecting disparity estimation errors in a disparity map. A classifier is trained using features of low computational complexity. The proposed method can in principle be used to improve the performance of any disparity estimation algorithm. The results presented in this paper are therefore of general interest for those working on disparity estimation. In addition, our method solves the problem of needing a large variation of input stereo video with ground truth disparity. In our approach, we visually inspect a disparity map and manually annotate blocks that appear to be errors and blocks that appear to be correct. We then train a classifier to do this work automatically. Recursive predictions are used to correct errors. Our manual annotation approach has the advantage that `ground truth' data is generated via low-cost annotation of arbitrary stereo video.","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116553936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-12-01DOI: 10.1109/IC3D.2013.6732087
Shu Matsuura
Stereoscopic 3D (S3D) display is beneficial for educational purposes, although visual fatigue remains an issue for practical use. To avoid this, we have introduced an intermittent S3D exposure method. In order to clarify detailed effects of pictorial cues in 2D and S3D, this study introduces a rotating lines perception test, in which the random rotational motion of two lines provides pictorial cues in non-S3D. In the test, participants are asked to distinguish depths of the lines after rotation with and without S3D display. Sequences of perception scores were translated into a one-dimensional walk. The perception trajectories of low success rates were found to be similar to Brownian motion, and trajectories of higher success rates showed negatively correlated fluctuations, implying the suppression of failures. Introduction of S3D led a shift from non to negatively correlated fluctuations. Further, small angle-rotation was found to affect perception with high scores. This effect was reduced by S3D. Finally, small depth-separation was found to remain an evident factor of misperception, even under S3D. These results suggest that non-S3D works well if the viewer is sufficiently careful about the spatial structure. The S3D provides detailed spatial perception with less cognitive load, even if it is exposed for a short time.
{"title":"Misperception of rotational motion images displayed with and without stereoscopy","authors":"Shu Matsuura","doi":"10.1109/IC3D.2013.6732087","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732087","url":null,"abstract":"Stereoscopic 3D (S3D) display is beneficial for educational purposes, although visual fatigue remains an issue for practical use. To avoid this, we have introduced an intermittent S3D exposure method. In order to clarify detailed effects of pictorial cues in 2D and S3D, this study introduces a rotating lines perception test, in which the random rotational motion of two lines provides pictorial cues in non-S3D. In the test, participants are asked to distinguish depths of the lines after rotation with and without S3D display. Sequences of perception scores were translated into a one-dimensional walk. The perception trajectories of low success rates were found to be similar to Brownian motion, and trajectories of higher success rates showed negatively correlated fluctuations, implying the suppression of failures. Introduction of S3D led a shift from non to negatively correlated fluctuations. Further, small angle-rotation was found to affect perception with high scores. This effect was reduced by S3D. Finally, small depth-separation was found to remain an evident factor of misperception, even under S3D. These results suggest that non-S3D works well if the viewer is sufficiently careful about the spatial structure. The S3D provides detailed spatial perception with less cognitive load, even if it is exposed for a short time.","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131476998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-12-01DOI: 10.1109/IC3D.2013.6732083
Hyun-Eui Kim, Minsik Park, B. Chae, Joonku Hahn, Hwi Kim, Cheong Hee Park, Kyungae Moon, Jinwoong Kim
We present optical fiber based large-scale color holographic three-dimensional display using a pupil tracking technique for wide viewing angle display applications. One of the limitations in implementing a large-scale holographic three-dimensional display is the restrictive space-bandwidth product of the spatial light modulator. In our proposed method, motor control system for steering optical fibers as a light guide and pupil tracking system are used to overcome the limitation of space-bandwidth product by steering the view window according to a position of the pupil of the observer. The proposed method employing the holographic stereogram in order to deliver two holographic patterns of different perspectives of a 3D scene to both eyes of the observer, which successfully provides both of the accommodation and binocular disparity.
{"title":"Large-scale color holographic display capable of steering view window","authors":"Hyun-Eui Kim, Minsik Park, B. Chae, Joonku Hahn, Hwi Kim, Cheong Hee Park, Kyungae Moon, Jinwoong Kim","doi":"10.1109/IC3D.2013.6732083","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732083","url":null,"abstract":"We present optical fiber based large-scale color holographic three-dimensional display using a pupil tracking technique for wide viewing angle display applications. One of the limitations in implementing a large-scale holographic three-dimensional display is the restrictive space-bandwidth product of the spatial light modulator. In our proposed method, motor control system for steering optical fibers as a light guide and pupil tracking system are used to overcome the limitation of space-bandwidth product by steering the view window according to a position of the pupil of the observer. The proposed method employing the holographic stereogram in order to deliver two holographic patterns of different perspectives of a 3D scene to both eyes of the observer, which successfully provides both of the accommodation and binocular disparity.","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"1972 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130026999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Stereo matching technique has been extensively investigated for depth map extraction, while most depth-map applications (such as 3D gaming, vehicle collision detection, etc.) adopt active scan systems to measure the distance. It is challenging to design an efficient hardware architecture of stereo matching which meets the real-time/high-resolution requirement. Moreover, external factors such as lighting condition, variance of lens distortion, and stereo image misalignment may impact the accuracy of the depth measurement significantly. To address these issues, we propose a real-time stereo matching architecture which is optimized for the accuracy of pose/gesture recognition and vehicle collision detection. The proposed architecture features sub-pixel estimation and programmable features in lens distortion, misalignment, lighting factor, working range, and refinement parameters. FPGA implementation of the proposed architecture produces stable depth map stream, reaching 1920×1080 image resolution at 60fps.
{"title":"Stereo matching architecture for 3D pose/gesture recognition and distance-measuring application","authors":"Hsueh-Yi Lin, Po-Kuan Huang, Tung-Yang Lin, K. Chang, Chi-Hao Wu, Chin-Chun Hsiao, C.-K. Liao","doi":"10.1109/IC3D.2013.6732095","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732095","url":null,"abstract":"Stereo matching technique has been extensively investigated for depth map extraction, while most depth-map applications (such as 3D gaming, vehicle collision detection, etc.) adopt active scan systems to measure the distance. It is challenging to design an efficient hardware architecture of stereo matching which meets the real-time/high-resolution requirement. Moreover, external factors such as lighting condition, variance of lens distortion, and stereo image misalignment may impact the accuracy of the depth measurement significantly. To address these issues, we propose a real-time stereo matching architecture which is optimized for the accuracy of pose/gesture recognition and vehicle collision detection. The proposed architecture features sub-pixel estimation and programmable features in lens distortion, misalignment, lighting factor, working range, and refinement parameters. FPGA implementation of the proposed architecture produces stable depth map stream, reaching 1920×1080 image resolution at 60fps.","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121580120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-12-01DOI: 10.1109/IC3D.2013.6732074
Yong Liu
3D cinema is heading towards self-sufficient maturity both technically and aesthetically. In this paper, I will undertake a comparative analysis of the distinctions between 3D and 2D cinema based on a correlation between techniques of production and perceptual physiologies. Moreover, with reference to Siegfried Kracauer's classic remark about cinematic ontology that “the nature of film is the redemption of physical reality” (1961), I will argue for 3D's greater ability to retrieve “physical reality” than 2D cinema through ontological comparisons between the two media. I will further elicit aesthetic values for 3D cinema based on the above argument and illustrate the grounds of artistic differentiation between 3D and 2D visuality and viscerality by comparing the extreme slow motion aesthetics utilised in brutally violent scenes in Dredd 3D (2012) with those in the 2D film Killing Them Softly (2012).
{"title":"The oval sphere vs. the flat canvas","authors":"Yong Liu","doi":"10.1109/IC3D.2013.6732074","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732074","url":null,"abstract":"3D cinema is heading towards self-sufficient maturity both technically and aesthetically. In this paper, I will undertake a comparative analysis of the distinctions between 3D and 2D cinema based on a correlation between techniques of production and perceptual physiologies. Moreover, with reference to Siegfried Kracauer's classic remark about cinematic ontology that “the nature of film is the redemption of physical reality” (1961), I will argue for 3D's greater ability to retrieve “physical reality” than 2D cinema through ontological comparisons between the two media. I will further elicit aesthetic values for 3D cinema based on the above argument and illustrate the grounds of artistic differentiation between 3D and 2D visuality and viscerality by comparing the extreme slow motion aesthetics utilised in brutally violent scenes in Dredd 3D (2012) with those in the 2D film Killing Them Softly (2012).","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120950478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-12-01DOI: 10.1109/IC3D.2013.6732090
Karim Benzeroual, R. Allison
Mass-market stereoscopic 3D gaming has recently become a reality on both gaming consoles and PCs. At the same time the success of devices such as the Nintendo Wii, Nintendo Wii Balance Board, Sony Move and Microsoft Kinect have made active movement of the head, limbs and body a key means of interaction in many games. We hypothesized that players may be more prone to cybersickness symptoms in stereoscopic 3D games based on active movement compared to similar games played with controllers or other devices, which do not require physical movement of the body with the exception of the hands and fingers. Two experimental games were developed to test this hypothesis while keeping other parameters as constant as possible. For the disorientation and oculomotor cybersickness subscales and the overall score of the Simulator Sickness Questionnaire, a significant interaction between display mode (S3D versus non-stereoscopic) and motion sickness susceptibility was found. However, contrary to our hypothesis, there was no indication that participants were particularly susceptible to cybersickness in S3D motion controller games.
{"title":"Cyber (motion) sickness in active stereoscopic 3D gaming","authors":"Karim Benzeroual, R. Allison","doi":"10.1109/IC3D.2013.6732090","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732090","url":null,"abstract":"Mass-market stereoscopic 3D gaming has recently become a reality on both gaming consoles and PCs. At the same time the success of devices such as the Nintendo Wii, Nintendo Wii Balance Board, Sony Move and Microsoft Kinect have made active movement of the head, limbs and body a key means of interaction in many games. We hypothesized that players may be more prone to cybersickness symptoms in stereoscopic 3D games based on active movement compared to similar games played with controllers or other devices, which do not require physical movement of the body with the exception of the hands and fingers. Two experimental games were developed to test this hypothesis while keeping other parameters as constant as possible. For the disorientation and oculomotor cybersickness subscales and the overall score of the Simulator Sickness Questionnaire, a significant interaction between display mode (S3D versus non-stereoscopic) and motion sickness susceptibility was found. However, contrary to our hypothesis, there was no indication that participants were particularly susceptible to cybersickness in S3D motion controller games.","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130430852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-12-01DOI: 10.1109/IC3D.2013.6732100
M. Swash, A. Aggoun, O. Fatah, Bei Li, J. C. Fernandez, E. Alazawi, Emmanuel Tsekleves
Holoscopic 3D imaging also known as Integral imaging is an attractive technique for creating full color 3D optical models that exist in space independently of the viewer. The constructed 3D scene exhibits continuous parallax throughout the viewing zone. In order to achieve depth control, robust and real-time, a single aperture holoscopic 3D imaging camera is used for recording holoscopic 3D image using a regularly spaced array of microlens arrays, which view the scene at a slightly different angle to its neighbor. However, the main problem is that the microlens array introduces a dark borders in the recorded image and this causes errors at playback on the holoscopic 3D Display. This paper proposes a reference based pre-processing of holoscopic 3D image for autostereoscopic holoscopic 3D displays. The proposed method takes advantages of microlens as reference point to detect amount of introduced dark borders and reduce/remove them from the holoscopic 3D image.
{"title":"Pre-processing of holoscopic 3D image for autostereoscopic 3D displays","authors":"M. Swash, A. Aggoun, O. Fatah, Bei Li, J. C. Fernandez, E. Alazawi, Emmanuel Tsekleves","doi":"10.1109/IC3D.2013.6732100","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732100","url":null,"abstract":"Holoscopic 3D imaging also known as Integral imaging is an attractive technique for creating full color 3D optical models that exist in space independently of the viewer. The constructed 3D scene exhibits continuous parallax throughout the viewing zone. In order to achieve depth control, robust and real-time, a single aperture holoscopic 3D imaging camera is used for recording holoscopic 3D image using a regularly spaced array of microlens arrays, which view the scene at a slightly different angle to its neighbor. However, the main problem is that the microlens array introduces a dark borders in the recorded image and this causes errors at playback on the holoscopic 3D Display. This paper proposes a reference based pre-processing of holoscopic 3D image for autostereoscopic holoscopic 3D displays. The proposed method takes advantages of microlens as reference point to detect amount of introduced dark borders and reduce/remove them from the holoscopic 3D image.","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128208707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-12-01DOI: 10.1109/IC3D.2013.6732099
K. Osmanis, G. Valters, I. Osmanis
Light budget of multi planar volumetric 3D display has been analyzed. Projection system based on solid state RGB light sources has been considered to be most appropriate for future use. In order to enable different light modulation modes solid state LED sources have been selected for light budget analysis.
{"title":"Light budget study for a multiplanar volumetric 3D display","authors":"K. Osmanis, G. Valters, I. Osmanis","doi":"10.1109/IC3D.2013.6732099","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732099","url":null,"abstract":"Light budget of multi planar volumetric 3D display has been analyzed. Projection system based on solid state RGB light sources has been considered to be most appropriate for future use. In order to enable different light modulation modes solid state LED sources have been selected for light budget analysis.","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115075064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-12-01DOI: 10.1109/IC3D.2013.6732086
Paul Hands, J. Read
Mathematically, 3D content should appear distorted unless viewed from the position the content was produced for. However, 3D content regularly gets viewed from incorrect angles, not perpendicular to the screen as intended. This distortion is not noticed, or at least does not affect the impression of 3D. This may be because a compensation mechanism known to exist with 2D content extends to 3D.Using canonical-form testing, we show that 3D content can appear warped when viewed from oblique angles, but the effect is small and non-stereo cues help to restore the effect.
{"title":"Perceptual compensation mechanisms when viewing stereoscopic 3D from an oblique angle","authors":"Paul Hands, J. Read","doi":"10.1109/IC3D.2013.6732086","DOIUrl":"https://doi.org/10.1109/IC3D.2013.6732086","url":null,"abstract":"Mathematically, 3D content should appear distorted unless viewed from the position the content was produced for. However, 3D content regularly gets viewed from incorrect angles, not perpendicular to the screen as intended. This distortion is not noticed, or at least does not affect the impression of 3D. This may be because a compensation mechanism known to exist with 2D content extends to 3D.Using canonical-form testing, we show that 3D content can appear warped when viewed from oblique angles, but the effect is small and non-stereo cues help to restore the effect.","PeriodicalId":252498,"journal":{"name":"2013 International Conference on 3D Imaging","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116784741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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