動いた動いた

これで良さそうです。

  UIImage *sicon = [UIImage imageWithContentsOfFile:icon_path];

  UIGraphicsBeginImageContext(CGSizeMake(FLCIconWidth, FLCIconHeight));
  [sicon drawInRect:CGRectMake(0, 0, FLCIconWidth, FLCIconHeight)];
  UIImage *dicon = UIGraphicsGetImageFromCurrentImageContext();  
  UIGraphicsEndImageContext();

  UIImageView *iconv = [[UIImageView alloc] initWithImage:dicon];