This test suite uses artificial brick textures generated by "cutting" bricks from a random background texture and separating them by mortar. The background textures are generated by "bombing" a blank image with gaussian blobs of various elongations and orientations. These images exhibit macrotextures and generally favour algorithms which are sensitive to coarse detail.
The images are generated by the makeBrick program with constant background elongations and rotations but varying mortar dimensions.
The mDensity?? tests vary the density of the mortar.
stagMort?? tests vary the width (x dimension) of alternate bricks while maintaining a constant mortar density. The first four tests have a mean mortar density of 6 while the last four tests have a mean density of 10.
The combin?? tests combine macrotexture and
microtexture differences. A test for mortar rotation is
confounded by varying background texture in combin01 while
combin02 confounds a test for background rotation with
varying mortar. combin03 is a four-way test of the above
combinations.
| Test | Images ¹ |
|---|---|
| mDensity01 | x10 x4 [ y10, e1, t0 ] |
| mDensity02 | x10 x5 [ y10, e1, t0 ] |
| mDensity03 | x10 x6 [ y10, e1, t0 ] |
| mDensity04 | x10 x7 [ y10, e1, t0 ] |
| mDensity05 | x10 x8 [ y10, e1, t0 ] |
| mDensity06 | x10 x9 [ y10, e1, t0 ] |
| stagMort01 | x6,6 x9,3 [ y10, e1, t0 ] |
| stagMort02 | x6,6 x8,4 [ y10, e1, t0 ] |
| stagMort03 | x6,6 x7,5 [ y10, e1, t0 ] |
| stagMort04 | x6,6 x7,5 x8,4 [ y10, e1, t0 ] |
| stagMort05 | x10,10 x13,7 [ y10, e1, t0 ] |
| stagMort06 | x10,10 x12,8 [ y10, e1, t0 ] |
| stagMort07 | x10,10 x11,9 [ y10, e1, t0 ] |
| stagMort08 | x10,10 x12,8 x14,6 [ y10, e1, t0 ] |
| combin01 | (x10y6e2t0 x10y6e2t30) (x6y10e2t0 x6y10e2t30) |
| combin02 | (x10y6e2t0 x6y10e2t0) (x10y6e2t30 x6y10e2t30) |
| combin03 | x10y6e2t0 x6y10e2t0 x10y6e2t30 x6y10e2t30 |
¹ e = elongation ; t = theta ; x = x0,x1 ; y = y ; Common parameters are shown in square [] brackets