The Experts below are selected from a list of 3831 Experts worldwide ranked by ideXlab platform
Jun Piao - One of the best experts on this subject based on the ideXlab platform.
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exemplar based pseudo viewpoint rotation for White Cane user recognition from a 2d human pose sequence
Advanced Video and Signal Based Surveillance, 2019Co-Authors: Naoki Nishida, Yasutomo Kawanishi, Daisuke Deguchi, Ichiro Ide, Hiroshi Murase, Jun PiaoAbstract:In recent years, various facilities are equipped to support visually impaired people, but accidents caused by visual disabilities still occur. In this paper, to support the visually-impaired people in a public space, we aim to classify whether a pedestrian image sequence obtained by a surveillance camera is a White-Cane user or not from the temporal transition of a human pose represented as 2D coordinates. However, since the appearance of the 2D pose varies largely depending on the viewpoint of the pose, it is difficult to classify them. So, in this paper, we propose a method to rotate the viewpoint of a pose from various pseudo-viewpoints based on a pair of 2D poses simultaneously observed and classify the sequence by multiple classifiers corresponding to each viewpoint. Viewpoint rotation makes it possible to obtain pseudo-poses seen from various pseudo-viewpoints, extract richer pose features, and recognize White-Cane users more accurately. Through an experiment, we confirmed that the proposed method improves the recognition rate by 12% compared to the method not employing viewpoint rotation.
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AVSS - Exemplar-Based Pseudo-Viewpoint Rotation for White-Cane User Recognition from a 2D Human Pose Sequence
2019 16th IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS), 2019Co-Authors: Naoki Nishida, Yasutomo Kawanishi, Daisuke Deguchi, Ichiro Ide, Hiroshi Murase, Jun PiaoAbstract:In recent years, various facilities are equipped to support visually impaired people, but accidents caused by visual disabilities still occur. In this paper, to support the visually-impaired people in a public space, we aim to classify whether a pedestrian image sequence obtained by a surveillance camera is a White-Cane user or not from the temporal transition of a human pose represented as 2D coordinates. However, since the appearance of the 2D pose varies largely depending on the viewpoint of the pose, it is difficult to classify them. So, in this paper, we propose a method to rotate the viewpoint of a pose from various pseudo-viewpoints based on a pair of 2D poses simultaneously observed and classify the sequence by multiple classifiers corresponding to each viewpoint. Viewpoint rotation makes it possible to obtain pseudo-poses seen from various pseudo-viewpoints, extract richer pose features, and recognize White-Cane users more accurately. Through an experiment, we confirmed that the proposed method improves the recognition rate by 12% compared to the method not employing viewpoint rotation.
Osamu Sueda - One of the best experts on this subject based on the ideXlab platform.
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identification of tactile walking surface indicators by White Cane
Virtual Environments Human-Computer Interfaces and Measurement Systems, 2010Co-Authors: Shoichiro Fujisawa, Naohiro Yamada, Shinichi Ito, Katsuya Sato, Seiji Mitani, Osamu SuedaAbstract:This paper describes identifying Tactile Walking Surface Indicators (TWSIs) with a White Cane using an accelerometer. The vibration was examined by using an actual dot block. The effectiveness of the White Cane was verified by examining the relation between the vibration and psychological strength. The experiment result revealed that there is no correlation between the psychological distance and the frequency spectrum.
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VECIMS - Identification of Tactile Walking Surface Indicators by White Cane
2010 IEEE International Conference on Virtual Environments Human-Computer Interfaces and Measurement Systems, 2010Co-Authors: Shoichiro Fujisawa, Naohiro Yamada, Shinichi Ito, Katsuya Sato, Seiji Mitani, Osamu SuedaAbstract:This paper describes identifying Tactile Walking Surface Indicators (TWSIs) with a White Cane using an accelerometer. The vibration was examined by using an actual dot block. The effectiveness of the White Cane was verified by examining the relation between the vibration and psychological strength. The experiment result revealed that there is no correlation between the psychological distance and the frequency spectrum.
Shuichi Ino - One of the best experts on this subject based on the ideXlab platform.
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the influence of the manner of grasping a White Cane on the ability of visually impaired people to perceive the texture of objects
International Conference on Human Systems Engineering and Design: Future Trends and Applications, 2018Co-Authors: Kiyohiko Nunokawa, Shuichi Ino, Kouki Doi, Manabu ChikaiAbstract:This study examined the relationship between a surface’s texture (i.e., the particle size) and the perception of its roughness obtained from a White Cane. The perception of roughness was measured by a magnitude estimation method with nine visually impaired people who used White Canes. Their audiovisual information was restricted with eye masks and earmuffs. The perceived texture was investigated with three different styles of grasping the White Cane: the index finger grasp, pencil grasp, and thumb grasp. Participants estimated the roughness of 18 waterproof abrasive papers with different particle sizes (6.7 to 279 μm). Because the exponent for this relationship was almost 0.35 for all three grasping styles when the particle size was small, it can be concluded that a small increase in the particle size causes a significant increase in the perceived roughness.
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IHSED - The Influence of the Manner of Grasping a White Cane on the Ability of Visually Impaired People to Perceive the Texture of Objects.
Human Systems Engineering and Design, 2018Co-Authors: Kiyohiko Nunokawa, Kouki Doi, Manabu Chikai, Shuichi InoAbstract:This study examined the relationship between a surface’s texture (i.e., the particle size) and the perception of its roughness obtained from a White Cane. The perception of roughness was measured by a magnitude estimation method with nine visually impaired people who used White Canes. Their audiovisual information was restricted with eye masks and earmuffs. The perceived texture was investigated with three different styles of grasping the White Cane: the index finger grasp, pencil grasp, and thumb grasp. Participants estimated the roughness of 18 waterproof abrasive papers with different particle sizes (6.7 to 279 μm). Because the exponent for this relationship was almost 0.35 for all three grasping styles when the particle size was small, it can be concluded that a small increase in the particle size causes a significant increase in the perceived roughness.
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Influence of the Manner of Grasping a White Cane on the Ability of Visually Impaired Persons to Use These Canes for Estimating Object Weights
Advances in Physical Ergonomics & Human Factors, 2018Co-Authors: Kiyohiko Nunokawa, Kouki Doi, Manabu Chikai, Shuichi InoAbstract:We have conducted research to obtain fundamental knowledge of the exploration methods used to perceive the characteristics of an object through contact with a White Cane. The research has enabled us to examine methods that enhance the accuracy of perceiving objects and the materials and design of a White Cane. In this study, we examine whether or not the method of grasping a White Cane affects weight perception, with 5 visually impaired people who use White Canes in their daily lives as participants. The participants provide estimates for the magnitudes of six weights ranging from 500 g to 1,000 g in steps of 100 g. Results indicate that weight can be determined using a White Cane, even though this method is slightly inferior to directly pushing the weight by hand. The weight perception obtained by employing a White Cane is not affected by the manner of grasping the Cane.
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judging hardness of an object from the sounds of tapping created by a White Cane
International Conference of the IEEE Engineering in Medicine and Biology Society, 2014Co-Authors: Kiyohiko Nunokawa, Yoshikazu Seki, Shuichi Ino, Kouki DoiAbstract:The White Cane plays a vital role in the independent mobility support of the visually impaired. Allowing the recognition of target attributes through the contact of a White Cane is an important function. We have conducted research to obtain fundamental knowledge concerning the exploration methods used to perceive the hardness of an object through contact with a White Cane. This research has allowed us to examine methods that enhance accuracy in the perception of objects as well as the materials and structures of a White Cane. Previous research suggest considering the roles of both auditory and tactile information from the White Cane in determining objects' hardness is necessary. This experimental study examined the ability of people to perceive the hardness of an object solely through the tapping sounds of a White Cane (i.e., auditory information) using a method of magnitude estimation. Two types of sounds were used to estimate hardness: 1) the playback of recorded tapping sounds and 2) the sounds produced on-site by tapping. Three types of handgrips were used to create different sounds of tapping on an object with a Cane. The participants of this experiment were five sighted university students wearing eye masks and two totally blind students who walk independently with a White Cane. The results showed that both sighted university students and totally blind participants were able to accurately judge the hardness of an object solely by using auditory information from a White Cane. For the blind participants, different handgrips significantly influenced the accuracy of their estimation of an object's hardness.
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EMBC - Judging hardness of an object from the sounds of tapping created by a White Cane.
Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Inte, 2014Co-Authors: Kiyohiko Nunokawa, Yoshikazu Seki, Shuichi Ino, Kouki DoiAbstract:The White Cane plays a vital role in the independent mobility support of the visually impaired. Allowing the recognition of target attributes through the contact of a White Cane is an important function. We have conducted research to obtain fundamental knowledge concerning the exploration methods used to perceive the hardness of an object through contact with a White Cane. This research has allowed us to examine methods that enhance accuracy in the perception of objects as well as the materials and structures of a White Cane. Previous research suggest considering the roles of both auditory and tactile information from the White Cane in determining objects' hardness is necessary. This experimental study examined the ability of people to perceive the hardness of an object solely through the tapping sounds of a White Cane (i.e., auditory information) using a method of magnitude estimation. Two types of sounds were used to estimate hardness: 1) the playback of recorded tapping sounds and 2) the sounds produced on-site by tapping. Three types of handgrips were used to create different sounds of tapping on an object with a Cane. The participants of this experiment were five sighted university students wearing eye masks and two totally blind students who walk independently with a White Cane. The results showed that both sighted university students and totally blind participants were able to accurately judge the hardness of an object solely by using auditory information from a White Cane. For the blind participants, different handgrips significantly influenced the accuracy of their estimation of an object's hardness.
Kiyohiko Nunokawa - One of the best experts on this subject based on the ideXlab platform.
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the influence of the manner of grasping a White Cane on the ability of visually impaired people to perceive the texture of objects
International Conference on Human Systems Engineering and Design: Future Trends and Applications, 2018Co-Authors: Kiyohiko Nunokawa, Shuichi Ino, Kouki Doi, Manabu ChikaiAbstract:This study examined the relationship between a surface’s texture (i.e., the particle size) and the perception of its roughness obtained from a White Cane. The perception of roughness was measured by a magnitude estimation method with nine visually impaired people who used White Canes. Their audiovisual information was restricted with eye masks and earmuffs. The perceived texture was investigated with three different styles of grasping the White Cane: the index finger grasp, pencil grasp, and thumb grasp. Participants estimated the roughness of 18 waterproof abrasive papers with different particle sizes (6.7 to 279 μm). Because the exponent for this relationship was almost 0.35 for all three grasping styles when the particle size was small, it can be concluded that a small increase in the particle size causes a significant increase in the perceived roughness.
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IHSED - The Influence of the Manner of Grasping a White Cane on the Ability of Visually Impaired People to Perceive the Texture of Objects.
Human Systems Engineering and Design, 2018Co-Authors: Kiyohiko Nunokawa, Kouki Doi, Manabu Chikai, Shuichi InoAbstract:This study examined the relationship between a surface’s texture (i.e., the particle size) and the perception of its roughness obtained from a White Cane. The perception of roughness was measured by a magnitude estimation method with nine visually impaired people who used White Canes. Their audiovisual information was restricted with eye masks and earmuffs. The perceived texture was investigated with three different styles of grasping the White Cane: the index finger grasp, pencil grasp, and thumb grasp. Participants estimated the roughness of 18 waterproof abrasive papers with different particle sizes (6.7 to 279 μm). Because the exponent for this relationship was almost 0.35 for all three grasping styles when the particle size was small, it can be concluded that a small increase in the particle size causes a significant increase in the perceived roughness.
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Influence of the Manner of Grasping a White Cane on the Ability of Visually Impaired Persons to Use These Canes for Estimating Object Weights
Advances in Physical Ergonomics & Human Factors, 2018Co-Authors: Kiyohiko Nunokawa, Kouki Doi, Manabu Chikai, Shuichi InoAbstract:We have conducted research to obtain fundamental knowledge of the exploration methods used to perceive the characteristics of an object through contact with a White Cane. The research has enabled us to examine methods that enhance the accuracy of perceiving objects and the materials and design of a White Cane. In this study, we examine whether or not the method of grasping a White Cane affects weight perception, with 5 visually impaired people who use White Canes in their daily lives as participants. The participants provide estimates for the magnitudes of six weights ranging from 500 g to 1,000 g in steps of 100 g. Results indicate that weight can be determined using a White Cane, even though this method is slightly inferior to directly pushing the weight by hand. The weight perception obtained by employing a White Cane is not affected by the manner of grasping the Cane.
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judging hardness of an object from the sounds of tapping created by a White Cane
International Conference of the IEEE Engineering in Medicine and Biology Society, 2014Co-Authors: Kiyohiko Nunokawa, Yoshikazu Seki, Shuichi Ino, Kouki DoiAbstract:The White Cane plays a vital role in the independent mobility support of the visually impaired. Allowing the recognition of target attributes through the contact of a White Cane is an important function. We have conducted research to obtain fundamental knowledge concerning the exploration methods used to perceive the hardness of an object through contact with a White Cane. This research has allowed us to examine methods that enhance accuracy in the perception of objects as well as the materials and structures of a White Cane. Previous research suggest considering the roles of both auditory and tactile information from the White Cane in determining objects' hardness is necessary. This experimental study examined the ability of people to perceive the hardness of an object solely through the tapping sounds of a White Cane (i.e., auditory information) using a method of magnitude estimation. Two types of sounds were used to estimate hardness: 1) the playback of recorded tapping sounds and 2) the sounds produced on-site by tapping. Three types of handgrips were used to create different sounds of tapping on an object with a Cane. The participants of this experiment were five sighted university students wearing eye masks and two totally blind students who walk independently with a White Cane. The results showed that both sighted university students and totally blind participants were able to accurately judge the hardness of an object solely by using auditory information from a White Cane. For the blind participants, different handgrips significantly influenced the accuracy of their estimation of an object's hardness.
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EMBC - Judging hardness of an object from the sounds of tapping created by a White Cane.
Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Inte, 2014Co-Authors: Kiyohiko Nunokawa, Yoshikazu Seki, Shuichi Ino, Kouki DoiAbstract:The White Cane plays a vital role in the independent mobility support of the visually impaired. Allowing the recognition of target attributes through the contact of a White Cane is an important function. We have conducted research to obtain fundamental knowledge concerning the exploration methods used to perceive the hardness of an object through contact with a White Cane. This research has allowed us to examine methods that enhance accuracy in the perception of objects as well as the materials and structures of a White Cane. Previous research suggest considering the roles of both auditory and tactile information from the White Cane in determining objects' hardness is necessary. This experimental study examined the ability of people to perceive the hardness of an object solely through the tapping sounds of a White Cane (i.e., auditory information) using a method of magnitude estimation. Two types of sounds were used to estimate hardness: 1) the playback of recorded tapping sounds and 2) the sounds produced on-site by tapping. Three types of handgrips were used to create different sounds of tapping on an object with a Cane. The participants of this experiment were five sighted university students wearing eye masks and two totally blind students who walk independently with a White Cane. The results showed that both sighted university students and totally blind participants were able to accurately judge the hardness of an object solely by using auditory information from a White Cane. For the blind participants, different handgrips significantly influenced the accuracy of their estimation of an object's hardness.
J.s. Zelek - One of the best experts on this subject based on the ideXlab platform.
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tactile inertial patterns from a long White Cane
IEEE International Conference on Biomedical Robotics and Biomechatronics, 2006Co-Authors: F. Wong, J.s. ZelekAbstract:People who are blind usually understand their environment via a long Cane with the cutaneous (tactile), kinesthetic and auditory modalities. We are currently interested in only how obstacle location is solely conveyed via tactile and kinesthetic information. Our objective is to gain insight into how we can encode scene information obtained from cameras and range finders in only tactile form. In our experiment, the tactile and inertial patterns from a long White Cane, the cutaneous sense and the kinesthetic sense associated with the use of long Cane, were measured in terms of force and inertial measurements. Inertial events were found to be highly correlated with tactile events. We conclude that the vibratory signal is only an artifact of the kinesthetic (inertial) information obtained by active use of the long Cane and plan to further explore auditory environmental discrimination abilities to provide the necessary insight for our desired tactile encoding
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Tactile & Inertial Patterns from a Long White Cane
The First IEEE RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2006. BioRob 2006., 1Co-Authors: F. Wong, J.s. ZelekAbstract:People who are blind usually understand their environment via a long Cane with the cutaneous (tactile), kinesthetic and auditory modalities. We are currently interested in only how obstacle location is solely conveyed via tactile and kinesthetic information. Our objective is to gain insight into how we can encode scene information obtained from cameras and range finders in only tactile form. In our experiment, the tactile and inertial patterns from a long White Cane, the cutaneous sense and the kinesthetic sense associated with the use of long Cane, were measured in terms of force and inertial measurements. Inertial events were found to be highly correlated with tactile events. We conclude that the vibratory signal is only an artifact of the kinesthetic (inertial) information obtained by active use of the long Cane and plan to further explore auditory environmental discrimination abilities to provide the necessary insight for our desired tactile encoding
