Appery Document Scanner Cordova Plugin

Document Scanner Cordova Plugin

Plugin for live document detection and auto cropping, returns either a URI or a base64 encoded string of the captured image.

Supported platforms

Android. Min SDK = 24, Target SDK = 30.

Usage

DocScannerPlugin.scan(successCallback, errorCallback, options)

Parameters

{function} success - callback function called when an image has been scanned successfully. Returns image URI or image as base64 depending on the options passed in;
{function} error - callback function called when an error occurs. It returns the error message as a string;
{object} options - options for document scanner;

Properties

Prop	Default	Type	Description
overlayColor	`rgba(66,165,245, 0.7)`	`string`	Color of the detected rectangle. See supported colors below.
borderColor	`rgba(66,165,245, 0.7)`	`string`	Color color of the borders of detected rectangle. See supported colors below.
detectionCountBeforeCapture	`15`	`integer`	Number of correct rectangle to detect before capture
enableTorch	`false`	`bool`	Allows to active or deactivate flash during document detection
brightness	`10`	`float`	Increase or decrease image brightness.Recommended values [0-100]
contrast	`1`	`float`	Increase or decrease image contrast. Recommended values [1.0-3.0]
useBase64	`false`	`bool`	If base64 representation should be passed instead of image uri's
captureMultiple	`false`	`bool`	Keeps the scanner on after a successful capture

Sample options JSON

All properties are optional

{
  "overlayColor": "rgba(66,165,245, 0.7)",
  "borderColor": "rgba(66,165,245, 0.7)",
  "detectionCountBeforeCapture": 15,
  "enableTorch": false,
  "brightness": 10,
  "contrast": 1,
  "useBase64": true,
  "captureMultiple": true
}

Supported overlay colors

#RRGGBB, #AARRGGBB, rgba(RRR, GGG, BBB, A.A)

The following names are also accepted:
red, blue, green, black, white, gray, cyan, magenta, yellow, lightgray, darkgray, grey,
lightgrey, darkgrey, aqua, fuchsia, lime, maroon, navy, olive, purple, silver, teal.

Contrast and brightness OpenCV transformation

For contrast and brightness adjustment, plugin uses OpenCV Mat.convertTo() function

For additional information, please see the link

Updated 6 months ago