Bug 315050 [Automation][Regression]Image size is different from golden file when preview as xls
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/ExcelLayoutEngine.java
{
			imageWidth = LayoutUtil.getImageWidth( image.getWidth( ),
					parentSizeInfo.getWidth( ), imageInfoWidth, imageWidthDpi );
			float scale = ( (float) imageInfoHeight )
					/ ( (float) imageInfoWidth );
			imageHeight = (int) ( imageWidth * scale );
		}
		else
		{
			imageHeight = LayoutUtil.getImageHeight( image.getHeight( ),
					imageInfoHeight, imageHeightDpi );
			imageWidth = LayoutUtil.getImageWidth( image.getWidth( ),
					parentSizeInfo.getWidth( ), imageInfoWidth, imageWidthDpi );
		}
		int[] imageSize = {imageHeight, imageWidth};
		return imageSize;
	}
	private SheetData createImageData( IImageContent image, byte[] imageData,
			int imageWidth, int imageHeight, StyleEntry entry,
			XlsContainer container )
	{
		int type = SheetData.IMAGE;
		entry.setProperty( StyleConstant.DATA_TYPE_PROP, type );
		String uri = image.getURI( );
		String mimeType = image.getMIMEType( );
		String extension = image.getExtension( );
		String altText = image.getAltText( );
		if ( FlashFile.isFlash( mimeType, uri, extension ) )
		{
			if ( null == altText )