## 4 Results
### Statistical Analysis of Eye-Movement Data
#### 4.1.1 Analysis of Differences in Eye-Movement Indicators in Different Types of Public Spaces
\begin{table}
\begin{tabular}{c c} \hline \hline
**Eye-Movement Indicators** & **Relevance** \\ \hline \multirow{3}{*}{Average fixation duration (s)} & \multicolumn{2}{c}{Represents the average duration (in seconds) of all the selected gaze points in the experiment; the longer the average duration of the gaze points in each scene, the greater the subject’s interest and involvement in an element of the space [65].} \\ \cline{2-2} \multirow{3}{*}{Fixation count} & The number of times a subject looks at an element per unit of time is an indicator that reflects the degree of the importance of the evaluation area; the more times a subject looks at the area, the higher the processing efficiency of the subject, and the visual information can quickly be used to form psychological information, representing the higher degree of attention or interest present in the subject [66]. \\ \hline \multirow{3}{*}{Average saccade amplitude (px)} & \multicolumn{2}{c}{Refers to the average size of all the selected eye beat amplitudes in the experiment (in terms of the viewing angle); the larger the average eye beat amplitude, the more distinctive the characteristics of the picture, and the greater the range of information acquired [67].} \\ \cline{2-2} \multirow{3}{*}{Saccade count} & \multicolumn{2}{c}{Refers to the number of eye jumps per unit time, which is an indicator of the subject’s search behavior; the more eye jumps per unit time, the greater the search volume and less obvious the characteristics of the image [68].} \\ \cline{2-2} \cline{5-8}  & \multicolumn{2}{c}{Refers to the average size of all the selected eye beat amplitudes in the experiment (in terms of the viewing angle); the larger the average eye beat amplitude, the more distinctive the characteristics of the picture, and the greater the range of information acquired [67].} \\ \hline \multirow{3}{*}{Saccade count} & \multicolumn{2}{c}{Refers to the number of eye jumps per unit time, which is an indicator of the subject’s search behavior; the more eye jumps per unit time, the greater the search volume and less obvious the characteristics of the image [68].} \\ \cline{2-2} \cline{5-8}  & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} \\ \cline{1-1} \cline{3-8}
**Category** & **M** & **SD** & **M** & **SD** & **M** & **SD** \\ \hline Square space & 0.28 & 0.06 & 75 & 15.89 & 123.91 & 24.78 & 74 & 15.89 & 30 \\ Street space & 0.41 & 0.10 & 62 & 17.06 & 132.29 & 42.50 & 61 & 17.06 & 30 \\ Waterfront space & 0.40 & 0.03 & 84 & 16.82 & 152.95 & 41.89 & 83 & 16.77 & 30 \\ Public green space & 0.38 & 0.11 & 91 & 22.85 & 179.66 & 18.55 & 90 & 22.85 & 30 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Selection of eye-movement indicators and their relevance. Average saccade amplitude analysis: According to the results, there were differences in the mean values of the average eye jump amplitudes for the different types of public space landscapes (Figure 3c). The mean values in descending order are as follows: public green space (179.66); waterfront space (152.95); street space (132.29); square space (123.91). The larger the average saccade amplitude, the more distinctive the features of the pictures. The spatial features of the public green space were more distinctive, and the subjects could directly reach the target area, while the square space was lower than the other three types of spaces, which indicated that the information search range of the square space is larger and not distinctive enough. Saccade count and fixation count analyses: From the results, the mean values of the numbers of the saccade count and fixation count for the four different types of public-space landscapes showed a positive correlation trend (Figure 3b,d, respectively), with floating range values between 74 and 91.