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- (IBAction)displayImagePickerSheet:(id)sender {
        NSOpenPanel *panel = [NSOpenPanel openPanel];
        [panel setAllowedFileTypes:allowedImageFileExtensions];
        [panel setDirectory:NSHomeDirectory()];
        [panel setAllowsMultipleSelection:NO];
        [panel setCanChooseDirectories:NO];
        [panel setCanChooseFiles:YES];
        [panel setResolvesAliases:YES];

        [panel beginSheetModalForWindow:window completionHandler:^(NSInteger result) {
                if (result == NSFileHandlingPanelOKButton) {
                        // Do some other stuff here
                } else {
                        [panel close];
                }

        }];
}