A study on unified organization of visual features in object recognition and spatial vision

物体识别和空间视觉中视觉特征的统一组织研究

• 批准号: 08301007
• 负责人: EJIMA Yoshimichi
• 金额: $ 5.5万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08301007/
• 关键词: binding problem; visual percption; form percption; object recognition; motion perception; depth perception; brain imaging; spatial vision; 3次元物体認識; 両眼手がかり; 単眼手がかり; fMRI; 恒常性; 面知覚; 両眼情報の統合; 3次元視覚実験装置; まとまり; 3次元運動検出; 2面の知覚的相互作用

The present study focused the binding problems of visual perceptual spatio-temporal features into object recognition and spatial vision. Using psychophysical experiments and brain imaging method, we investigated the following.1) Temporal integration in generation of contour perceptionUsing the sequential presentation of two pairs of disks with a sector removed, we investigated the temporal integration properties of subjective contour perception. It was found that the temporal integration time for subjective contour was longer than that for real contour (edge or line contour), suggesting that the retention of local information takes an important role in generation of subjective contour.2) Binocular integrationWe presented a new illusory perception of motion tranceparency caused by the binocular presentation of counter-phase flickering stimuli. It was suggested that the visual system decomposes the moving images into Fourier components, and that the decomposition may be mediated by the first order motion system such as the direction- and disparity-sensitive motion energy detection system.3) Interaction between moving edge and statinary chromatin edgeWe presented a new phenomina involed perceptually unified organization of a atationary chromatic pattern and a moving black outline or dot pattern. It was suggested that the visual system effectively uses information from moving features to define the shape of overlapping chromatic image regions.4) The others concearned 'The 2-D motion assimilation', 'Summation between nearby motion signals and facilitatory/inhibitory interaction between distant motion signals', 'Interaction between luminance and color cues in generation of neon color spreading', 'A new method for magnetoencephalography', and 'Magnetic responses of human cortical area V1 to sinusoidal grating stimuli.

本研究将视觉感知时空特征的约束问题应用于物体识别和空间视觉。本研究采用心理物理实验和脑成像方法，研究了1)轮廓知觉产生中的时间整合问题。实验发现，主观轮廓的时间积分时间比真实轮廓的时间积分时间长，说明局部信息的保留在主观轮廓的产生中起着重要作用。2)双目积分我们提出了一种新的运动透明度的幻觉知觉，这是由于双眼呈现反相位闪烁刺激而引起的。有人认为视觉系统将运动图像分解成傅立叶分量，这种分解可能由一阶运动系统(如方向和视差敏感的运动能量检测系统)调节。3)运动边缘和静态染色质边缘之间的相互作用我们提出了一种新的现象，包括运动的彩色图案和运动的黑色轮廓或点图案的感知统一组织。这表明视觉系统有效地利用运动特征信息来定义重叠的彩色图像区域的形状。4)其他研究包括：二维运动同化、近运动信号之间的总和和远距离运动信号之间的促进/抑制相互作用、霓虹灯颜色传播中亮度和颜色线索之间的相互作用、脑磁图的新方法以及人类大脑皮层V1区对正弦光栅刺激的磁响应。

项目成果

花田光彦 江島義道: "オプチックフローによる自己運動方向知覚のモデリング" 信学技報. HIP98-55. 25-31 (1999)

Mitsuhiko Hanada 和 Yoshimichi Ejima：“使用光流的自运动方向感知建模”IEICE 技术报告 25-31 (1999)。

K.Ido, Y.Ohtani, Y.Ejima: "Dependencies of motion assimilation and motion contrast on spatial propernes of stimuli : spatial-frequency nonselective and selective interactions" Vision Research. 37(12). 1565-1574 (1997)

K.Ido、Y.Ohtani、Y.Ejima：“运动同化和运动对比对刺激空间属性的依赖性：空间频率非选择性和选择性相互作用”视觉研究。

K.Ido,Y.Ohtani,Y.Ejima: "Dependencies of motion assilamation and motion contrast on spatial propeties of stimuli : spatial-frequency nonselective and selective interactions between local motion detectors" Vision Research. (In press). (1997)

K.Ido、Y.Ohtani、Y.Ejima：“运动同化和运动对比对刺激空间特性的依赖性：局部运动检测器之间的空间频率非选择性和选择性相互作用”视觉研究。

N.Goda,Y.Ejima: "Discrimination of colors with colored surround under white adaptation" The 8th Congress of the International Color Assocition. (発表予定). (1997)

N.Goda，Y.Ejima：“白色适应下彩色环绕的颜色辨别”，国际色彩协会第八届大会（即将提交）。

K.Toyama, K.Yoshikawa, Y.Ejima, et al.: "A new method for magnetoencephalography : a three dimensional magnetometel-spatial filter system" Neuroscience. in press. (1999)

K.Toyama、K.Yoshikawa、Y.Ejima 等人：“脑磁图的新方法：三维磁力空间过滤系统”神经科学。