Visualization of distance maps relative to the reference model for our Asteroid-GS method and the SPG method on asteroid Ryugu (162173). Views observed from six directions (+x, -x, +y, -y, + z, -z) comprehensively highlight the differences. The histograms of the distance maps on the right illustrate the statistical distribution of distances. The SPG method exhibits more distances distributed away from the histogram center, indicating that many regions have significant errors. In contrast, our Asteroid-GS method shows a narrower range in the histogram, suggesting higher reconstruction accuracy.