/// <summary>
/// To save metadata of file
/// </summary>
/// <param name="obj"></param>
private int saveMetadata(EntityModel.Image obj)
{
try
{
ent.Images.Add(obj);
ent.SaveChanges();
return(obj.ImageId);
}
catch (Exception)
{
return(0);
}
}
/// <summary>
/// Get best match image(s) from database
/// </summary>
/// <param name="imgObj"></param>
/// <returns>return list of best match images List<EntityModel.Image></returns>
public List <EntityModel.Image> GetImagesByBestMatch(EntityModel.Image imgObj)
{
try
{
List <EntityModel.Image> matchImageList = null;
//Best match based on checksum
matchImageList = ent.Images.Where(p => p.Checksum == imgObj.Checksum && p.ImagePath != imgObj.ImagePath).ToList();
if (matchImageList.Count() != 0)
{
return(matchImageList);
}
//Best match based on image content
if (imgObj.IsImageContainsText == true)
{
int messageLength = imgObj.Description.Length;
matchImageList = ent.Images.Where(p => p.ImagePath != imgObj.ImagePath &&
p.Description.Contains(imgObj.Description.Substring(0, messageLength / 4)) ||
p.Description.Contains(imgObj.Description.Substring(messageLength / 4, messageLength / 2)) ||
p.Description.Contains(imgObj.Description.Substring(messageLength / 2, messageLength * 3 / 4)) ||
p.Description.Contains(imgObj.Description.Substring(messageLength * 3 / 4, messageLength)) ||
p.Description.Contains(imgObj.Description.Substring(0, messageLength / 5)) ||
p.Description.Contains(imgObj.Description.Substring(messageLength * 4 / 5, messageLength))
).ToList();
if (matchImageList.Count() != 0)
{
return(matchImageList);
}
}
//Best match based on metadata
matchImageList = ent.Images.Where(p => p.Length >= (imgObj.Length - 5000) && p.Length <= (imgObj.Length + 5000) &&
p.RedPercentage >= (imgObj.RedPercentage - 2) && p.RedPercentage <= (imgObj.RedPercentage + 2) &&
p.GreenPercentage >= (imgObj.GreenPercentage - 2) && p.GreenPercentage <= (imgObj.GreenPercentage + 2) &&
p.BluePercentage >= (imgObj.BluePercentage - 2) && p.BluePercentage <= (imgObj.BluePercentage + 2) &&
p.Width >= (imgObj.Width - 50) && p.Width <= (imgObj.Width + 50) &&
p.Height >= (imgObj.Height - 50) && p.Height <= (imgObj.Height + 50) &&
p.IsImageContainsFace == imgObj.IsImageContainsFace &&
p.IsImageContainsText == imgObj.IsImageContainsText
).ToList();
return(matchImageList);
}
catch (Exception)
{
throw;
}
}