| BOORU CHARS dataset can be used (and used) for visual ranking similar images using | |
| TENTR - enthropy (micro complexity) | |
| TSKEW - skewness (darkness) | |
| TSTDDEV - standard deviation (contrast) | |
| TCOLORS - colorfulness | |
| MEANG - color saturation | |
| EDGE - canny edge detector (macro complexity) | |
| This multi-dimensional paramentic cloud was analyzed with XY Excel diagrams (e.g. BCI_V00_diagrams.xls, | |
| BCI_Vnn_diagrams.xls with SQL queries included) and leads me to 2 "weigth functions" | |
| MAIN rating = (tentr-0.3)*(log(10,tcolors)-3)*(tstddev-0.1) DESC | |
| REVERSE rating = (tentr+0.3)*(meang+0.1)*(tstddev+0.1) ASC | |
| with boundary condition (Main:REV ~ 2:1 by count) | |
| (tcolors>50000 and tentr>0.5 and tstddev>0.15 and meang>0.1) | |
| This results in zip-folders Mxx/Rxx released. | |
| Full query for MAIN rating | |
| select b.booru, b.fid, ipath, b.sourcefile, | |
| tentr, rank() over (partition by ipath order by tentr desc) r_entr, | |
| tskew, | |
| tstddev, rank() over (partition by ipath order by tstddev desc) r_sdev, | |
| tcolors, rank() over (partition by ipath order by tcolors desc) r_color, round(log(10,tcolors)-3,4) lc, | |
| meang, rank() over (partition by ipath order by meang desc) r_meang, | |
| edge, rank() over (partition by ipath order by edge desc) r_edge, | |
| rank() over (partition by ipath order by (tentr-0.3)*(log(10,tcolors)-3)*(tstddev-0.1) desc) r_ALL | |
| from bct_im d join bct_exif b on b.booru=d.booru and b.fid=d.fid | |
| where (tcolors>50000 and tentr>0.5 /* >0.6 for volume 2018-7x10 */ and tstddev>0.15 and meang>0.1) | |
| for REVERSE | |
| select b.booru, b.fid, ipath, b.sourcefile, | |
| tentr, rank() over (partition by ipath order by tentr) d_entr, | |
| tskew, | |
| tstddev, rank() over (partition by ipath order by tstddev) d_sdev, | |
| tcolors, rank() over (partition by ipath order by tcolors ) d_color, round(ln(tcolors+16),3) lc, | |
| meang, rank() over (partition by ipath order by meang) d_meang, | |
| edge, rank() over (partition by ipath order by edge) d_edge, | |
| rank() over (partition by ipath order by (tentr+0.3)*(meang+0.1)*(tstddev+0.1)) d_ALL | |
| from bct_im d join bct_exif b on b.booru=d.booru and b.fid=d.fid | |
| where not (tcolors>50000 and tentr>0.5 /*>0.6@2018-7x10*/ and tstddev>0.15 and meang>0.1) | |