| h | Enable the Hue thresholding. Valid value hsvthreshold_Threshold / 1 OR hsvthreshold_Group / 2. |
| s | Enable the Saturation thresholding. Valid value hsvthreshold_Threshold / 1 OR hsvthreshold_Group / 2. |
| v | Enable the Value thresholding. Valid value hsvthreshold_Threshold / 1 OR hsvthreshold_Group / 2. |
| h1 | The lower Hue bound. The default value for h1 and h2 are set to keep the filter from thresholding out any Hue value. (h1 defauilt: 255) |
| h2 | The upper Hue bound. The default valye for h1 and h2 are set to keep the filter from thresholding out any Hue value. (h2 default: 0) |
| s1 | The lower Saturation bound. The default value for s1 and s2 are set to make the filter threshold pixels that are not very saturated. (s1 default: 255) |
| s2 | The upper Saturation bound. The default value for s1 and s2 are set to make the filter threshold pixels that are not very saturated. (s2 default: 10) |
| v1 | The lower Value bound. The default value for v1 and v2 are set to make the filter threshold pixels whose value is very dark. (v1 default: 255) |
| v2 | The upper Value bound. The default value for v1 and v2 are set to make the filter threshold pixels whose value is very dark. (v2 default: 10) |