Figure 5.
Four elbow X ray images are shown in the top row labelled Reference H R 0065, D i V A Net, S Mixer t, and Ours. Each image displays the same rotated elbow joint region. The lower row shows corresponding gradient maps labelled H R Gradient, D i V A Net Gradient, S Mixer Gradient, and Ours Gradient. Each gradient image presents edge intensity patterns of the same region. A vertical scale bar is shown at the right of the gradient row with values 0, 100, 200, and 300.Histogram of oriented gradients (HOG) as a visualization feature to display the edge gradient information of the SR images. We presented 0065 samples with an upsampling factor, incorporating DiVANet and ShuffleMixer (tiny) as benchmark comparisons