@article{oai:kindai.repo.nii.ac.jp:00005746,
 author = {矢野,  勝也 and 小濱,  剛},
 issue = {28},
 journal = {Memoirs of the Faculty of Biology-Oriented Science and Technology of Kinki University, 近畿大学 生物理工学部 紀要},
 month = {Sep},
 note = {[要旨] 初期視覚神経系の情報処理の特徴を定式化した顕著性マップモデルは, 顕著さの勾配に従って走査することで視線の移動を再現することができるが, 特定の候補点の中から視線の移動先が選出されるために, ある程度長時間のシミュレーションでは循環が生じてしまう. 本研究では, 同じ視対象を繰り返し注視することを防ぐ復帰抑制と, 周辺視野において生じる目標対象と同じ属性への応答を強化させる復帰増強と呼ばれる現象に着目し, 従来の顕著性マップモデルに対して, これらの緒特性についての拡張を行った. さらに, 網膜上の錐体細胞の密度分布に起因する第1次視覚野における皮質拡大を考慮し, 視線移動のたびに生じる大脳皮質における網膜像の表象の変化を実装した. 提案モデルによる視覚探索のシミュレーションを行った結果, 従来モデルよりもターゲットの発見率が向上され, また, 視線移動の軌跡が一定の戦略を持った探索時の視線移動に似たパターンとなることが示された.    [Abstract]   The saliency map model is a mathematical expression of the characteristics of early visual information processing systems, which calculates the distribution of the saliency of a visual scene. Such models can predict the distribution of gaze positions (Itti & Koch 2000). However, the simulated gaze patterns show iterating profiles for long-range simulations. In order to avoid these unrealistic gaze patterns, the abstraction of inhibition of return (IOR) is important; TOR refers to the suppression of processing of objects that have recently been gazed. In peripheral vision, there is a phenomenon called facilitation of return (FOR), which refers as an enhancement of the visibility of particular visual attributes to make a search more efficient. Furthermore, the heterogeneous distribution of cone cells on the retina, which are extremely concentrated in the fovea, might affect the target search process. In this study, we modified the TOR operation using a Gaussian function proportion decrement with random peak value and the FOR operation by filtering with DOG (difference of Gaussians) functions during the early-stage processing of saliency map calculation. Moreover, input images were remapped to represent the cortical magnification in visual area 1. We tested the proposed model by the target detection rate in a visual search task simulation. The results indicate that the target detection rate was higher than that of the previous model, and the simulated scan-paths show similar profiles with the scan-path of visual search under certain strategy., 本研究は近畿大学生物理工学部戦略的研究No.09-IV-10, 2010の助成を受けた., application/pdf},
 pages = {41--52},
 title = {〈Original Papers〉視覚属性に対する注意の影響と網膜像の皮質における写像を考慮した視覚探索モデル},
 year = {2011},
 yomi = {ヤノ, カツヤ and コハマ, タケシ}
}