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Modern Geomatics Technologies and Applications

Fig. 1. A sample of segmented IRS-LISS image in different levels

Fig. 2. A sample of segmented IKONOS-PAN image in different levels, showing the effect of color in segmentation

Visual comparison of segmentation in different levels shows the effects and importance of scale parameters in making an
image object and the direct linear relation between scale parameter and image object size. In combining homogeneity
criterion, the role of color parameter for making image object is high, because of keeping local contrast and feature
distinction. Given the heterogeneity of the image and the complexity of spectral reflection, panchromatic image has

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