private IAdapterProxy GetAdapter()
{
if (_adapter == null)
{
_adapter = new CameraRawXmpAdapter(_photoPath);
}
return(_adapter);
}
private bool IsExposureChanged(IAdapterProxy img1, IAdapterProxy img2)
{
if ((img1.GetExif()["ExposureTime"] != img2.GetExif()["ExposureTime"]) || (img1.GetExif()["Iso"] != img2.GetExif()["Iso"]) || (img1.GetExif()["F-number"] != img2.GetExif()["F-number"]))
{
return(true);
}
return(false);
}
/* it applies the preset to every image in the change object */
public override void SaveChange()
{
for (int i = _startImageNum; i <= _lastImageNum; i++)
{
IAdapterProxy current = _modifiedImages[i];
current.ApplyPreset(this);
}
}
/* it saves the vignette values to every image belonging the change */
public override void SaveChange()
{
for (int i = _startImageNum; i <= _lastImageNum; i++)
{
IAdapterProxy current = _modifiedImages[i];
current.ApplyVignette(_intensity);
}
}
// it calculates and applies the changes to every image
public override void SaveChange()
{
// retriving the initial value
double initialExposureTime = _modifiedImages[_startImageNum].GetExposure();
for (int i = _startImageNum; i <= _lastImageNum; i++)
{
IAdapterProxy current = _modifiedImages[i];
/* (relative position * unit increment) + initial value = new value
* using this methods we can obtain a smooth exposure transition */
double newExposureTime = initialExposureTime + (_increment * (i - _startImageNum));
// set & save
current.SetExposure(newExposureTime);
current.SaveExposure();
}
}
public static string GetName(this IAdapterProxy proxy)
{
Console.WriteLine("Called Proxy Extension Method");
return("proxy name");
}
/* Analyzes exposure, searching for changes and creating "exposureChanges"
* lists, to store images data in change sequence. Then Calculate the
* exposure offset required to match differences in images.
*/
public void AnalyzeExposure()
{
int startExpChange;
// foreach image in _images
for (int i = 0; i < _images.Count - 1; i++)
{
IAdapterProxy curr = _images[i];
IAdapterProxy next = _images[i + 1];
// Sets start image of exposure change
if (_exposureChanges.Count == 0)
{
startExpChange = 0;
}
else
{
startExpChange = _exposureChanges.Last().GetLastImageNum() + 1;
}
if (IsExposureChanged(curr, next))
{
ExposureChange newChange = new ExposureChange(_images, startExpChange, i);
double exposure = 0;
Dictionary <string, double> exif1 = curr.GetExif();
Dictionary <string, double> exif2 = next.GetExif();
// If the shutter speed was changed
if (exif1["ExposureTime"] != exif2["ExposureTime"])
{
// Use log and doubling function to calculate stops
if (exif1["ExposureTime"] < exif2["ExposureTime"])
{
exposure += Math.Log2(exif1["ExposureTime"] / exif2["ExposureTime"]);
}
else
{
exposure += (-1) * Math.Log2(exif1["ExposureTime"] / exif2["ExposureTime"]);
}
}
// If the aperture was changed
if (exif1["F-number"] != exif2["F-number"])
{
// Use log function to calculate stops
exposure += (2) * Math.Log2(exif1["F-number"] / exif2["F-number"]);
}
// If iso was changed
if (exif1["Iso"] != exif2["Iso"])
{
// Use log function to calculate stops
exposure += (-1) * Math.Log2(exif1["Iso"] / exif2["Iso"]);
}
// If the "xmp" exposure setting is changed..
if (curr.GetExposure() != next.GetExposure())
{
exposure += (next.GetExposure() - curr.GetExposure());
}
// Set calculated change to object
newChange.SetExposureChange(exposure);
// Save exposure change to exposureChanges list!
// Allowing multiple exposure changes to occur and be analyzed independently
_exposureChanges.Add(newChange);
}
}
Console.WriteLine("[!] Finished analyzing the exposure time");
_exposureChanges.ForEach(expChange => expChange.SaveChange());
Console.WriteLine("[!] Finished saving the exposure changes to files");
}
