This section describes the records that are produced when you ingest an image or document file.
The image ingest engine writes image data to a track named Image_1
.
The following sample XML shows a record produced when you ingest an image, multi-page image such as a TIFF file, or a presentation file (.PPT, .PPTX, .ODP).
<record> <pageNumber>1</pageNumber> <trackname>Image_1</trackname> <Page> <image> <imagedata format="PNG">...</imagedata> <width>222</width> <height>140</height> <pixelAspectRatio>1:1</pixelAspectRatio> <format>PNG</format> <compressionQuality>100</compressionQuality> </image> <pagetext/> </Page> </record>
The record contains the following information:
pagenumber
element describes the page that the record is associated with. Most image files have a single page but formats such as TIFF support multiple pages.The image
element contains information about the image.
imagedata
element contains the image data, base-64 encoded. The format
attribute is deprecated and HPE recommends using the format
element instead.width
and height
elements provide the size of the image.pixelAspectRatio
element describes the shape of the pixels that make up the image, for example 1:1 pixels are square.format
element describes the format of the image data contained in the imagedata
element. For images in the Image_1
track, this value is always PNG
.compressionQuality
element describes the amount of compression that is applied to the data in the imagedata
element. For images in the Image_1
track, this value is always 100
(indicating maximum quality and no compression).If you ingest a document such as a PDF file, the output might also include the text extracted from text elements:
<record> <pageNumber>1</pageNumber> <trackname>Image_1</trackname> <Page> <image> <imagedata format="PNG">...</imagedata> <width>892</width> <height>1260</height> <pixelAspectRatio>1:1</pixelAspectRatio> <format>PNG</format> <compressionQuality>100</compressionQuality> </image> <pagetext> <element> <text>Some text</text> <region> <left>115</left> <top>503</top> <width>460</width> <height>41</height> </region> <angle>0</angle> </element> ... </pagetext> </Page> </record>
The pagetext
element contains information about associated text elements. If the ingested media was a PDF file, each record represents a page. If the ingested media was another type of document the record represents an embedded image and the text that follows it, up to the next embedded image.
Each element
element describes a text element and contains the following data:
text
element contains the text from the text element.The region
element provides the position of the text element on the page.
The region information is accurate only if the ingested document was an Adobe PDF file.
angle
element provides the orientation of the text.Information about text elements is used by the OCR analysis engine, which automatically combines the text elements with the text extracted from images, to produce a complete transcript of the text that appears on the page.
The image ingest engine produces a proxy track, named taskName.proxy
, where taskName
is the name of your ingest task. The purpose of the proxy
track is to contain information about the ingested source. The engine produces one record in this track for each page in the ingested image or document.
The following XML shows a sample record:
<record> <pageNumber>1</pageNumber> <trackname>ImageIngestTask.Proxy</trackname> <proxy path="./image.jpeg" url="./image.jpeg" mimeType="image/jpeg" estimatedDuration="0" pages="1"> <streams> <videoStream id="0" width="2592" height="1936" sar="1:1" codec=""/> </streams> <metadata> <tag name="Author">A Name</tag> <tag name="Creation Date">2014-04-09T09:15:19Z</tag> <tag name="Flash">Flash did not fire</tag> <tag name="GPS Latitude">52° 13' 10.69"</tag> <tag name="GPS Longitude">0° 8' 49.23"</tag> ... </metadata> </proxy> </record>
The metadata
element contains any metadata that HPE Media Server was able to extract from the source. The information present in this element varies based on the format of the source file and the information present in the source.
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