QVGA - Quarter VGA: 1/4 size of standard VGA resolution, i.e. 320*240, which is mainly used in mobile phones and portable players at present
QQVGA - 1/4 screen of QVGA with resolution of 120*160
VGA - Video Graphics Array: with resolution of 640*480, some small portable devices are using such screens
SVGA - Super Video Graphics Array: an alternative to VGA screen, with a maximum support of 800 × 600 resolution
At present, VGA and QVGA formats are the mainstream of infrared thermal imaging image resolution.