Particle parameters Generator of the Laboratory of Mechanics in Lille (LML) -part of SIGlml suite- PGlml is part of Particle Image Velocimetry image generation for Particle Generation (i.e. particle parameters such as position, size and brightness). Presently, gaussian particle in image space (i.e. 2D) is drawn on both slope background and noisy grey level. It is intended to test 2D2C PIV codes. For 3D space, see PIVnet SIG at www.meol.cnrs.fr SIG . SIGlml program suite: PGlml | DGlml | SIGlml - PGlml - DGlml - SIGlml ex.: #PIV generation PGlml -o particles.cimg ##single exposure generation DGlml -i particles.cimg -d -0.5 -o particles_1.cimg DGlml -i particles.cimg -d +0.5 -o particles_2.cimg ##double exposure generation DGlml -i particles.cimg -d 1 -o particles_1n2.cimg ##single exposure images SIGlml -i particles_1.cimg -o particles_1.png SIGlml -i particles_2.cimg -o particles_2.png ##double exposure image SIGlml -i particles_1n2.cimg -o particles_1n2.png PGlml -h PGlml: Particle parameter Generator of LML, it uses different GNU libraries (see --info option) usage: ./PGlml -h -I #help and compilation information ./PGlml -o gauss_particle_parameters.cimg -s 1.2 -S 2.3 -b 123 -B 234 #random gaussian particle parameterss ./PGlml -n 1234 -O true #show position image usage misc.: ./PGlml --test-mask true -P test_mask_positions.png -O true #default text rendering mode ./PGlml --test-text true --text 'DG .:.' -P text_positions.png -O true #specific text rendering version: v0.0.3 (other library versions: DGlml_parameter_format.v0.0.1:xySB) compilation date: (Jan 12 2013, 23:21:38) --help true help (or -h option) --info false show compilation options (or -I option) --test-mask false Run and show mask test --test-text false Run and show text mask test (use also --text) --text ) Render this text as available area for the particles -n 1234 number of particles -s 1 minimum value of sigma of gaussian function (i.e. minimum size) -S 2 maximum value of sigma of gaussian function (i.e. maximum size) -b 200 minimum value of amplitude of the gaussian function (i.e. minimum brightness) -B 255 maximum value of amplitude of the gaussian function (i.e. maximum brightness) -o particle_parameters.cimg file name to output all parameters of the particles -x -10.5 width minimum value of the particle volume -X 521.5 width maximum value of the particle volume -y -10.5 height minimum value of the particle volume -Y 521.5 height maximum value of the particle volume -M 0 image file name of the particle mask (0 no particle, 1 particle area) -O false display position image (e.g. -O true) -P false file name to output positions in an image (e.g. -P positions.png)