A novel method to convert raster images in a scalable vector graphic(SVG)format using similar features of pixel is presented(call SRRI).SRRI starts image segmentation for raster images with similar features;the edges of image segmentation are obtained and there are rendered by SVG with polygon or Bezier curve.Then the obtained SVG graphics with different region edges for similar features of pixel are merged if the converted SVG is very large size.Experimental results prove the SVG rendering effectiveness of SRRI method and goods performance for converting raster images.The SVG rendering approach is very useful for huge size images and thick texture culture relic images of digital museum.