Papers by Angela Duangchit
Dangerous glare detection during night driving is able to reduce car accidents because the driver... more Dangerous glare detection during night driving is able to reduce car accidents because the driver has time to prepare for upcoming situations. Even though increasing driving concentration might be a good solution for this issue, wrong detection would still practically be an essential factor decreasing driver's visual performance. Furthermore, loss of driving vision could cause car accidents. This research intends to reduce wrong detection in means of false positive and negative using methods based on an embedded system. Two techniques including HSV and the magnitude of vector are implemented to find the warning threshold of dangerous headlight glare with the least possible false positive and negative detection.
Though there is a study concerning vision restoration of headlight-glare vision, enhancing visual... more Though there is a study concerning vision restoration of headlight-glare vision, enhancing visual quality is able to be improved. Current frame information would contain more video features instead of restoring it only from the previous frame in order to achieve higher quality of vision during dangerous-glare encounter. Therefore, this paper proposes a new method recovering information from the surrounding area of glare centroid which distorts the luminance. Three-dimensional recursive search (3DRS) is assigned to retrieve luminance information from Macroblock (MB) of the previous non-glare affected frames. Tone mapping is also applied to improve luminance of the distorted MB. The result shows that frames with the glare area under 15% implemented the proposed method acquires higher peak-signal-to-noise ratio (PSNR) than those applied glare simulation. Furthermore, the combination of restoration method and the proposed one results in the best performance of increasing PSNR among applying only a single method.
The 4th Joint International Conference on Information and Communication Technology, Electronic and Electrical Engineering (JICTEE), 2014
Previously, estimation of piled logs scattered in wide area is processed via hi-definition fixed ... more Previously, estimation of piled logs scattered in wide area is processed via hi-definition fixed camera which is not effective because the camera is attracted to be stolen. Therefore, the method to calculate area of segmented outdoor piled logs is now implemented on a smartphone which consists of an orientation sensor in order to benefit mobile usage and reduce cost of camera installation. The method is two-dimensional area calculation of piled logs with virtual ruler grid based on images taken through a calibrated smartphone camera. The result shows that the proposed method is able to alleviate time-consuming issue, the method accuracy is relatively 88% compared to measuring by a tape measure.
The 4th Joint International Conference on Information and Communication Technology, Electronic and Electrical Engineering (JICTEE), 2014
Dangerous glare detection during night driving is able to reduce car accidents because the driver... more Dangerous glare detection during night driving is able to reduce car accidents because the driver has time to prepare for upcoming situations. Even though increasing driving concentration might be a good solution for this issue, wrong detection would still practically be an essential factor decreasing driver's visual performance. Furthermore, loss of driving vision could cause car accidents. This research intends to reduce wrong detection in means of false positive and negative using methods based on an embedded system. Two techniques including HSV and the magnitude of vector are implemented to find the warning threshold of dangerous headlight glare with the least possible false positive and negative detection.
The 4th Joint International Conference on Information and Communication Technology, Electronic and Electrical Engineering (JICTEE), 2014
Though there is a study concerning vision restoration of headlight-glare vision, enhancing visual... more Though there is a study concerning vision restoration of headlight-glare vision, enhancing visual quality is able to be improved. Current frame information would contain more video features instead of restoring it only from the previous frame in order to achieve higher quality of vision during dangerous-glare encounter. Therefore, this paper proposes a new method recovering information from the surrounding area of glare centroid which distorts the luminance. Three-dimensional recursive search (3DRS) is assigned to retrieve luminance information from Macroblock (MB) of the previous non-glare affected frames. Tone mapping is also applied to improve luminance of the distorted MB. The result shows that frames with the glare area under 15% implemented the proposed method acquires higher peak-signal-to-noise ratio (PSNR) than those applied glare simulation. Furthermore, the combination of restoration method and the proposed one results in the best performance of increasing PSNR among applying only a single method.
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Papers by Angela Duangchit