Low-level cues and ultra-fast face detection.
Low-level cues and ultra-fast face detection.
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DOI：
10.3389/fpsyg.2011.00342
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发表时间：
2011
影响因子：
3.8
通讯作者：
Thorpe SJ
中科院分区：
文献类型：
--
作者：
Crouzet SM;Thorpe SJ
最近的实验工作已经证明了在自然场景中存在朝向面部的极其快速的扫视，其可以在图像开始后仅100 ms开始（Crouzet等人，）。这些超快速扫视构成了对视觉系统中当前处理模型的主要挑战，因为它们似乎没有留下足够的时间来通过腹侧流进行单次前馈。在这里，我们探索的可能性，触发这些非常快速的扫视所需的信息可以提取非常早在视觉处理中使用相对较低的水平的幅度谱（AS）的信息在傅立叶域。实验1表明，AS归一化可以显着改变人脸检测性能。然而，AS标准化后性能的下降并不能单独证明使用了基于AS的信息（Gaspar和Messelet）。在实验2中，继Gaspar和Reisselet的论文之后，我们使用了一个交换过程来阐明AS信息在快速目标检测中的作用。我们的实验由三个条件组成：（i）原始图像，（ii）类别交换，其中人脸图像具有车辆的AS，车辆具有人脸的AS，以及（iii）身份交换，其中人脸具有另一张人脸图像的AS，车辆具有另一张车辆图像的AS。结果显示，原始和身份交换条件下的性能水平非常相似，而类别交换条件下的性能明显下降。这一结果表明，在早期的时间窗口所提供的扫视选择任务，视觉扫视系统确实依赖于低层次的AS信息，以快速检测到的面孔。这种粗略的诊断信息可能在视觉系统的早期就得到了，可能早在V1和V2。
Recent experimental work has demonstrated the existence of extremely rapid saccades toward faces in natural scenes that can be initiated only 100 ms after image onset (Crouzet et al.,). These ultra-rapid saccades constitute a major challenge to current models of processing in the visual system because they do not seem to leave enough time for even a single feed-forward pass through the ventral stream. Here we explore the possibility that the information required to trigger these very fast saccades could be extracted very early on in visual processing using relatively low-level amplitude spectrum (AS) information in the Fourier domain. Experiment 1 showed that AS normalization can significantly alter face-detection performance. However, a decrease of performance following AS normalization does not alone prove that AS-based information is used (Gaspar and Rousselet,). In Experiment 2, following the Gaspar and Rousselet paper, we used a swapping procedure to clarify the role of AS information in fast object detection. Our experiment is composed of three conditions: (i) original images, (ii) category swapped, in which the face image has the AS of a vehicle, and the vehicle has the AS of a face, and (iii) identity swapped, where the face has the AS of another face image, and the vehicle has the AS of another vehicle image. The results showed very similar levels of performance in the original and identity swapped conditions, and a clear drop in the category swapped condition. This result demonstrates that, in the early temporal window offered by the saccadic choice task, the visual saccadic system does indeed rely on low-level AS information in order to rapidly detect faces. This sort of crude diagnostic information could potentially be derived very early on in the visual system, possibly as early as V1 and V2.
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DOI：
10.1002/ar.a.20207
发表时间：
2005-07-01
期刊：
ANATOMICAL RECORD PART A-DISCOVERIES IN MOLECULAR CELLULAR AND EVOLUTIONARY BIOLOGY
影响因子：
--
作者：
Collins, CE;Lyon, DC;Kaas, JH
通讯作者：
Kaas, JH
影响因子：
5.5
作者：
CAMPBELL, FW;ROBSON, JG
通讯作者：
ROBSON, JG
影响因子：
3.7
作者：
Nestor, Adrian;Vettel, Jean M.;Tarr, Michael J.
通讯作者：
Tarr, Michael J.
影响因子：
5.3
作者：
Bereshpolova, Y;Stoelzel, CR;Swadlow, HA
通讯作者：
Swadlow, HA
影响因子：
2
作者：
Guyader, N;Chauvin, A;Marendaz, C
通讯作者：
Marendaz, C