We often need to consider the influence on human perception when we develop an image processing algorithm or design parameters for imageprocessing. The perception of color noise is also important for understanding th...
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ISBN:
(纸本)9781479923427
We often need to consider the influence on human perception when we develop an image processing algorithm or design parameters for imageprocessing. The perception of color noise is also important for understanding the human vision system (HVS). Although we can use the CSF to express the property of achromatic noise appearance, it is not so easy to be applied to colors. While the CSF can be explained by a primary color vision, a color appearance is governed by higher order mechanisms. In this paper, we show the quantitative difference between achromatic and chromatic noise appearance. To reveal the perception of color noise quantitatively, we have conducted subjective experiments with modeled achromatic and chromatic noises using the 2AFC method. According to the results, it is shown that the ratio of luminance noise sensitivity to color noise sensitivity is 10~0-10~2 depends on their spatial frequencies and background colors.
In the context of remote sensing application to land monitoring, the problem of sea and ocean monitoring from SAR images is addressed in this paper. The high-resolution multitemporal and Polarimetric observation capab...
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ISBN:
(纸本)9781467311601
In the context of remote sensing application to land monitoring, the problem of sea and ocean monitoring from SAR images is addressed in this paper. The high-resolution multitemporal and Polarimetric observation capability offered by the current COSMO-SkyMed Synthetic Aperture Radar (SAR) constellation is exploited. Various image processing algorithms based on non-linear filtering, segmentation, and data fusion are presented which help the location of different objects/phenomena, such as ships, surface changes, waves, etc. This work is framed in the context of two projects funded by the Italian Space Agency. Experiments are performed on COSMO-SkyMed images related to Tyrrhenian and Ligurian Sea (Italy).
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