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Sensory Memory Precessing for Color Integration

Author: ZhangGuo
Tutor: YangZhongLe
School: Central South University for Nationalities
Course: Biomedical Engineering
Keywords: Reconstruction Color Integration Eyes drive cells Sensory memory
CLC: TP391.41
Type: Master's thesis
Year: 2008
Downloads: 60
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Abstract


Visual system can identify the hundreds of thousands of colors in the real world, but is well known, these colors are only in the retina is separated into red, green, and blue basic colors, so the color reconstruction has become an important problem of the visual information processing, it is theoretical issues, there are two, one is where reconstruction and the other is how to rebuild the. Where reconstruction has been debated, and some believe that the reconstruction of the lower level cognitive processing, and some at a senior level, each level in the visual pathway that contributes to. These arguments has not been consensus. To explore this issue, we will feel the memory research and study of three-dimensional information processing method is introduced color reconstruction, designed two sets of clever psychophysical experiments to test the two questions. The first set of experiments, by contrast monocular observation and binocular observation results, study the integration process is the single-channel level or dual-channel level. And then through a combination of the two sets of experimental results, to finalize the integration of cognitive processing occurs in the lower level or advanced level. The second set of experiments, by changing the two basic color rendering interval investigated the characteristics of the integration time, in order to determine the integration time processing stage. The same time, we establish the specific implementation of the method of this experiment in high-precision and single-screen display technology, based on the different colors of display time and the ISI control in the range of a few milliseconds, to 'screen' per unit time. And use this method to carry out a series of innovative design ideas, the main contents are: 1. Eyes points depending on the method of observation has presented two different colors of objects in the left and right of the fixation point, no matter how ISI set to be fused are stable color can not be seen, the image that is seen only transient. Indicating that the color integration is a single-channel level, took place before the eyes drive cells, not from the higher cognitive stage. 2 when the two objects of different colors are sequentially displayed in the same physical location, the two colors in the particular experimental conditions can occur integration, i.e. the color of the integration time interval of the ISI present time. The integration of color information processing maximum time interval of about 80ms. The retinal integration time is very short, and color integration experiment in 80ms still able to integrate the color integration occurs in the retina after processing. Established criterion of color integration and sensory memory of the linkages between the: As has color rendering time and ISI amount of time strictly control the sensory memory to maintain time within the scope of that color integration occurred in the level of sensory memory.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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