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# Text Detection

Text detection identifies regions in images and video frames that contain text.

Configuration Parameter | Description
--- | ---
CharHeightUnit | The units to use for setting the minimum and maximum character heights.
Contrast | The minimum contrast level between the text and the background.
DetectionThreshold | The minimum confidence score required for Media Server to detect text.
Input | The image track to process.
MaxCharHeight | The maximum height of a character in the text.
MaxInputQueueLength | Can be used to place a limit on latency.
MinCharHeight | The minimum height of a character in the text.
NumParallel | The maximum number of video frames to analyze simultaneously.
Region | A region of the image or video frame to restrict analysis to.
RegionUnit | The units that the Region parameter uses to specify the size and position of a region.
SampleInterval | The interval at which frames are selected to be analyzed.
Type | The analysis engine to use. Set this parameter to `TextDetection`.

## OutputTracks

Output track | Type | Description | Output1This column indicates whether the information contained in the track is included by default in the output created by an output task (when you don't set the Input parameter for the output task).
--- | --- | --- | ---
`Result` | TextDetectionResult | Contains a single record for each detection. The record describes the region that contains the text. | Yes
`ResultWithSource` | TextDetectionResultAndImage | Contains the same information as the `Result` track, but each record also includes the best source frame. | No

TextDetectionResult

Field name | Type | Description
--- | --- | ---
id | UUIDData | A universally unique identifier to identify the detection result.
region | RectangleData | The location of the detected text.
confidence | Integer | The confidence score for the detection.

TextDetectionResultAndImage

The same as `TextDetectionResult` records, with the following additional fields.

Field name | Type | Description
--- | --- | ---
image | ImageData | The source image or video frame.

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