Figure 5. Visual salience group differences.

(A) Illustration of the graph-based visual saliency (GBVS) salience model (Full model combining five channels: I-Intensity, O-Orientation, C-Color, F-Flicker, M-Motion). From top to bottom: Saliency map extracted for a given frame, Saliency map overlay on the original image, Original image with 15% most salient parts shown. (B) Box plot depicting mean receiver operating characteristic (ROC) values, derived framewise from full salience maps and fixation coordinates (x,y), for a sample of 51 TD (Typically Developing) and 166 ASD (Autism Spectrum Disorder) children. Boxes indicate the interquartile range (IQR) and medians are shown as horizontal lines within the boxes. Whiskers extend to the farthest data points not exceeding 1.5 times the IQR from the box edges, in line with Tukey's method. Framewise statistical between group differences were evaluated using the Wilcoxon paired test, with asterisks (***) indicating p-values less than 0.001. Effect size is calculated using formula ${\displaystyle r=Z/\sqrt{N}}$, (Rosenthal, 1991).