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Welcome to
RasterID!
Here is a sequence of actions applied to recognize title
blocks. The steps to work with a raster image:
Opening an image file or obtaining it from the scanner
Image preparation, correcting the scanned image using filters
- If an image is rotated, you can align it horizontally with
Rotate.
- Media is often skewed during scanning (especially on large scanners), so if a resulting image is skewed, use Deskew to deskew it within 5 degrees.
- Scanning brings some low-sized (some pixels) objects – "raster speckle"; they can be removed with Speckle Remover.
- "Holes" in raster lines are removed with Hole Remover.
- Mechanical drawings have an inner frame inside which a drawing and a tittle block are located. To enlarge an image and therefore speed up work apply Crop by Frame and Crop by
Black.
Creating a title block template with the command Train Title Block.
Allows you to create a title block template (which contains parameters and controls text recognition) for its further detecting and recognizing on a raster image in the batch process.
The text recognition module to train symbols, which are contained in the title block with the TrainOCR
command.
Creates a new OCR-symbols library or modifies the existing one. The OCR-symbols library is used to recognize the text inside a title block. The prepared library is supplied with the program; this library contains characters of English alphabet; so it can be used as a basis.
Previewing the recognition quality with the Preview Title Block
command
This command runs title block recognition on the current raster image. Recognized data is exported to active receivers. The settings of the Train Title Block dialog. are used in recognition.
The Recognize title block command is most useful for checking recognition quality when creating new title block template (the Train title block command).
Batch recognition of title blocks with the Batch
command
Processing scenario is a sequence of operations for each image (for example, to increase the image quality). Before running batch processing or indexing you need to create one or more processing scenarios and save them to a script file. RasterID script files have the extension ".ssf". To create a draft of the processing scenario you need to check the images quality visually. To do so you should load a selection of images and inspect them. Try to estimate the image orientation, flip, contents and title blocks contained in them. Keep the required processing actions in your mind.
Enjoy
your new program!
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