Abstract: On the issue that Shanxi Houma convenant tablets is serious degraded, this paper does
researches on extraction the text and virtual restoration. Combining image processing algorithms and
human-computer interaction, a method of Houma convenant tablets virtual restoration based on
suprathreshold stochastic resonance was proposed. Firstly, transform the original RGB image to hue
saturation value (HSV) color space, and restore the brightness image by suprathreshold stochastic
resonance (SSR), then use modified bilateral filtering Canny operator to extract text contour
information, and combine with human-computer interaction to text contour restoring, finally, adopt
the method of color transfer to restore the text after filling into the original cinnabar color.
Experimental results show that the fuzzy words with poor stroke connectivity and faded color of
Houma convenant tablets can be repaired effectively by digital image processing.

Key words: Houma convenant tablets, virtual restoration, suprathreshold stochastic resonance;
contour extraction