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stacker:docs:syntheticstereo [2017/02/17 01:26] rjlittlefield [Overview] |
stacker:docs:syntheticstereo [2017/04/16 17:19] rjlittlefield added "Calculating Shift Based On Viewing Angle" |
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| If you are on a Windows computer or have Windows emulation software, you should consider getting a copy of the free StereoPhoto Maker software (http://stereo.jpn.org/eng/stphmkr/). It provides an excellent viewer that allows displaying a single image in various display formats, including crossed-eye, parallel viewing, red-cyan anaglyphs, and many other less common forms. It also provides a variety of editing capabilities. Cropping is especially handy, since this feature is not yet built into Zerene Stacker. | If you are on a Windows computer or have Windows emulation software, you should consider getting a copy of the free StereoPhoto Maker software (http://stereo.jpn.org/eng/stphmkr/). It provides an excellent viewer that allows displaying a single image in various display formats, including crossed-eye, parallel viewing, red-cyan anaglyphs, and many other less common forms. It also provides a variety of editing capabilities. Cropping is especially handy, since this feature is not yet built into Zerene Stacker. | ||
| - | + | ===== Calculating Shift Based On Viewing Angle ===== | |
| + | |||
| + | You can calculate the shift percents if you know three things: | ||
| + | * subjectStackWidth = frame width at the subject | ||
| + | * subjectStackDepth = stack depth at the subject | ||
| + | * viewAngle = viewing angle, measured as angular deviation from the usual straight-on view | ||
| + | |||
| + | Given these values, the calculation is straightforward: | ||
| + | |||
| + | * maximumShiftInX = tan(viewAngle) * (subjectStackDepth/subjectStackWidth) * 100% | ||
| + | |||
| + | For example, if you want a viewing angle that is 4 degrees off-axis, with a stack whose frame width is 10 mm and stack depth is 5 mm, then you would calculate as follows: | ||
| + | |||
| + | * subjectStackWidth = 10 | ||
| + | * subjectStackDepth = 5 | ||
| + | * viewAngle = 4 degrees | ||
| + | * maximumShiftInX = tan(4 degrees) * (5/10) * 100% = 3.4963% | ||
| + | |||
| + | If you're doing the calculation in Excel, then remember to convert degrees to radians. The formula in Excel would be: | ||
| + | |||
| + | * =TAN(RADIANS(4)) * (5/10) * 100 | ||
| + | |||
| + | For generating stereo pairs, simply use viewAngle = (plus and minus) separationAngle / 2 | ||
| ===== Other Resources ===== | ===== Other Resources ===== | ||