Keep Aspect Ratio - If checked crop box keeps the same proportions when you reside it.
Vertical/Horisontal - Use it to fast switch portrait landscape orientation of the crop box.
Aspect Ratio - input Width and Height crop box proportions here.
Face Center Position X : Y (%) - This is relative coordinate of a point located between eyes on detected face. If you set it 50%:50% it will be at exact centre of the crop.
Size/Scale by Height - it is a size of the crop bot in relation to size of the detected face. If you set it to “1” - the height oh the photo will be equal to calculated head size. Point point between eyes will be at the middle of the photo, jaw line will be at the bottom side of the crop with same size of top of the middle point. If you set it to “2” - height of the crop will be twice bigger than height of the head. “1.50” - height of the crop will be one and half bigger than height of the head.
Find Head Top over Background - if this one is not checked the program think that the face that you working with has ideal proportions. It means distance from centre point to lower jaw point is exactly the same as distance between that centre point and head top most point. This usually true for a person with very short hair, or bald, who keeps his or her head straight. If head is tilted, or if person have big hairdo, this distances can bi different. If you enable “Find Head Top over Background” option the program looks up above centre point to find the top of the head. This function works if the person stay against plain coloured background. Although it can be background of any colour as far as it plain it is better to avoid plain white or plain black backgrounds.
Find Crop Center by Detected Face/Head/Body - By default the program use a point between eyes as a centre. But if a person on photo has is head turned sideways point between his or her eyes is not centre of person’s head. If you took person’s photo over plain coloured background you may ask the program to place the person in centre by leaving the same sized margins from left and right of persons head. Or if it body shot you may select to centre figure by with same sized margins from left and right of whole body.
Fixed Pixel Export Width - If this field is zero, the program exports crop as large (or as small) as it was cut from the photo. If this field is not zero the program downscale larger crops to selected size.
Upscale smaller images - Fixed Pixel Export Width is not zero and this option is active - the program upscales smaller crops and downscale larger crops to selected size.
NOTE - there are similar settings in programs preferences. Preset’s property have more priority than general program defaults. That means the if “Fixed Pixel Export Width” in preset are not zero - the program downscales/upscales images according to preset properties. if “Fixed Pixel Export Width” in preset is zero - the program downscales/upscales images according to program preferences.
Straighten - when checked the program straighten the photo in a way to rotate the image around centre of the face
Additional Tilt - angle to tilt the picture. Centre point of the rotation is the face centre. It “Straighten” option is enabled the image will be straighten at first and tilted after that.
Following are helper controls:
Fit To View - display whole picture fitted to view panel.
100% - display the image in original pixel size
FACE - zooms in to fit detected face area to view panel.
Crop edit controls:
Expand - expands cropping area to maximum size with respect of detected face centre and crop proportions.
Revert - revert all crop box changes. Makes the crop the same as it was when you opened that window.
Undo/Redo - Undo or Redo last crop change.
Save As Preset - Brings up a dialogue to enter preset name