科学家首次使用计算机智能预测人眼视觉系统-凯发k8官网

科学家首次使用计算机智能预测人眼视觉系统
文章来源:未知 文章作者:meng 发布时间:2010-06-17 02:47 字体: [ ] 
(单词翻译:双击或拖选)

scientists have just come several steps closer to understanding change blindness(变化盲视) — the well studied failure of humans to detect seemingly obvious changes to scenes around them — with new research that used a computer-based model to predict what types of changes people are more likely to notice. these findings on change blindness were presented in a journal of vision article, "a semi-automated approach to balancing bottom-up salience(突出,卓越) for predicting change detection performance."

"this is one of the first applications of computer intelligence to help study human visual intelligence, " said author peter mcowan, professor at queen mary, university of london. "the biologically inspired mathematics we have developed and tested can have future uses in letting computer vision systems such as robots detect interesting elements in their visual environment."

during the study, participants were asked to spot the differences between pre-change and post-change versions of a series of pictures. some of these pictures had elements added, removed or color altered, with the location of the change based on attention grabbing properties (this is the "salience" level referred to in the article).

unlike previous research where scientists studied change blindness by manually manipulating such pictures and making decisions about what and where to make a change, the computer model used in this study eliminated any human 1(偏见) . the research team at queen mary's school of electronic engineering and computer science developed an algorithm(算法) that let the computer "decide" how to change the images that study participants were asked to view.

while the experiments confirmed that change blindness can be predicted using this model, the tests also showed that the addition or removal of an object from the scene is detected more readily than changes in the color of the object, a result that surprised the scientists. "we expected a color change to be a lot easier to spot, since color plays such an important role in our day-to-day lives and visual perception," said lead researcher milan verma of queen mary.

the authors suggest that the computer-based approach will be useful in designing displays of an essential nature such as road signs, emergency services, security and surveillance(监督,监视) to draw attention to a change or part of the display that requires 2 attention.

"we live in a world in which we are immersed(沉湎,专注) in visual information," explained verma. "the result is a huge 3 burden which may hinder(阻碍,打扰) our ability to complete a given task. this study is an important step toward understanding how visual information is processed and how we can go about 4 the presentation of visual displays."



点击收听单词发音收听单词发音  

1 0qbyq     
n.偏见,偏心,偏袒;vt.使有偏见
参考例句:
  • they are accusing the teacher of political bias in his marking.他们在指控那名教师打分数有政治偏见。
  • he had a bias toward the plan.他对这项计划有偏见。
2 aapxh     
adj.立即的;直接的,最接近的;紧靠的
参考例句:
  • his immediate neighbours felt it their duty to call.他的近邻认为他们有责任去拜访。
  • we declared ourselves for the immediate convocation of the meeting.我们主张立即召开这个会议。
3 uqwz0     
adj.认知的,认识的,有感知的
参考例句:
  • as children grow older,their cognitive processes become sharper.孩子们越长越大,他们的认知过程变得更为敏锐。
  • the cognitive psychologist is like the tinker who wants to know how a clock works.认知心理学者倒很像一个需要通晓钟表如何运转的钟表修理匠。
4 56a2ad080ec9d3c4cf573c347d6de828     
v.使最优化,使尽可能有效( optimize的现在分词 );最佳化;寻优
参考例句:
  • this model may be classified as either an optimizing model or simulation model. 这个模型可分为最佳化模型或模拟模型。 来自辞典例句
  • need to design crossover operator rationally while optimizing ann. 优化网络需要合理设计交叉算子。 来自互联网
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