CaptureVisionRouter Multiple Image Processing

setInput

Sets up an image source to provide images for continuous processing.

Syntax

setInput(imageSource: ImageSourceAdapter): void;

Parameters

imageSource: The image source which is compliant with the ImageSourceAdapter interface.

Return Value

None.

Code snippet

router = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();
let view = await Dynamsoft.DCE.CameraView.createInstance();
cameraEnhancer = await Dynamsoft.DCE.CameraEnhancer.createInstance(view);
router.setInput(cameraEnhancer);

See Also

ImageSourceAdapter

getInput

Returns the image source object.

Syntax

getInput(): ImageSourceAdapter;

Parameters

None.

Return Value

Returns the current image source.

Code snippet

const imageSource = CaptureVisionRouter.getInput();

addResultReceiver

Adds a CapturedResultReceiver object as the receiver of captured results.

Syntax

addResultReceiver(receiver: CapturedResultReceiver): void;

Parameters

receiver: The receiver object, of type CapturedResultReceiver.

Return Value

None.

Code snippet

router = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();
const resultReceiver = new Dynamsoft.CVR.CapturedResultReceiver();
resultReceiver.onCapturedResultReceived = (result) => {
    /* Do something with the result */
};
router.addResultReceiver(resultReceiver);

removeResultReceiver

Removes the specified CapturedResultReceiver object.

Syntax

removeResultReceiver(receiver: CapturedResultReceiver): void;

Parameters

receiver: The receiver object, of type CapturedResultReceiver.

Return Value

None.

Code snippet

router = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();
const resultReceiver = new Dynamsoft.CVR.CapturedResultReceiver();
resultReceiver.onCapturedResultReceived = (result) => {
    /* Do something with the result */
};
router.addResultReceiver(resultReceiver);
//...
router.removeResultReceiver(resultReceiver);

addResultFilter

Adds a MultiFrameResultCrossFilter object to filter non-essential results.

Syntax

addResultFilter(filter: MultiFrameResultCrossFilter): Promise<void>;

Parameters

filter: The filter object, of type MultiFrameResultCrossFilter.

Return Value

A promise that resolves when the operation has successfully completed. It does not provide any value upon resolution.

Code snippet

filter = new Dynamsoft.Utility.MultiFrameResultCrossFilter();
router = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();
router.addResultFilter(filter);

In the provided code snippet, the default filter implementation is utilized. This filter can offer cross-validation and de-duplication functionalities. To utilize this filter, it’s necessary to include the corresponding package dynamsoft-utility.

See also

MultiFrameResultCrossFilter

removeResultFilter

Removes the specified MultiFrameResultCrossFilter object.

Syntax

removeResultFilter(filter: MultiFrameResultCrossFilter): : Promise<void>;

Parameters

filter: The filter object, of type MultiFrameResultCrossFilter.

Return Value

A promise that resolves when the operation has successfully completed. It does not provide any value upon resolution.

Code snippet

filter = new Dynamsoft.Utility.MultiFrameResultCrossFilter();
router = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();
router.addResultFilter(filter);
// ...
router.removeResultFilter(filter);

startCapturing

Initiates a capturing process based on a specified template. This process is repeated for each image fetched from the source.

Syntax

startCapturing(templateName?: string): Promise<void>;

Parameters

templateName: specifies a “CaptureVisionTemplate” to use. If not specified, “Default” is used.

There are two types of CaptureVisionTemplates: the preset ones which come with the SDK and the custom ones that get initialized when the user calls initSettings.

Please be aware that the preset CaptureVisionTemplates will be overwritten should the user calls initSettings and pass his own settings.

Return Value

A promise that resolves when the capturing process has successfully started. It does not provide any value upon resolution.

Code snippet

router = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();
await router.startCapturing("ReadSingleBarcode");

stopCapturing

Stops the capturing process.

Syntax

stopCapturing(): void;

Parameters

None.

Return Value

None.

Code snippet

router = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();
await router.startCapturing("ReadSingleBarcode");
// ...
router.stopCapturing();