The Last Meter: Blind Visual Guidance to a Target.

The Last Meter: Blind Visual Guidance to a Target.
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DOI:
10.1145/2556288.2557328
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发表时间:
2014-04
期刊:
Proceedings of the SIGCHI conference on human factors in computing systems. CHI Conference
影响因子:
--
通讯作者:
Coughlan JM
Coughlan JM
中科院分区:
其他
文献类型:
--
作者:
Manduchi R;Coughlan JM

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智能手机应用程序可以使用对象识别软件向盲人或弱视用户提供有关视觉环境中对象的信息。对于这些用户来说,一个关键的挑战是如何正确瞄准相机以拍摄所需目标物体的清晰构图照片。我们研究了物体识别的两个基本限制——帧速率和相机视野——对盲人使用物体识别智能手机应用程序的能力的影响。 18 名盲人参与者使用该应用程序寻找手臂无法触及的视觉目标,并将其接近到 30 厘米以内。虽然我们预计更快的帧速率或更宽的相机视场总是可以提高搜索性能,但我们的实验结果表明,在许多情况下,增加视场并没有帮助,甚至可能会损害性能。这些结果对于盲人用户的物体识别系统的设计具有重要意义。
Smartphone apps can use object recognition software to provide information to blind or low vision users about objects in the visual environment. A crucial challenge for these users is aiming the camera properly to take a well-framed picture of the desired target object. We investigate the effects of two fundamental constraints of object recognition – frame rate and camera field of view – on a blind person’s ability to use an object recognition smartphone app. The app was used by 18 blind participants to find visual targets beyond arm’s reach and approach them to within 30 cm. While we expected that a faster frame rate or wider camera field of view should always improve search performance, our experimental results show that in many cases increasing the field of view does not help, and may even hurt, performance. These results have important implications for the design of object recognition systems for blind users.
DOI: 10.1142/s0218213009000196
发表时间: 2009-06-01
影响因子: 1.1
作者:
Coughlan, James;Manduchi, Roberto
通讯作者: Manduchi, Roberto
DOI: 10.1037/1082-989x.1.4.390
发表时间: 1996-03-01
影响因子: 7
作者:
McGraw, KO;Wong, SP
通讯作者: Wong, SP