--- layout: default-layout title: MultiFrameResultCrossFilter Class - Dynamsoft Capture Vision MAUI Edition description: MultiFrameResultCrossFilter class of DCV MAUI edition implements the CapturedResultFilter interface, providing filtering options for various types of captured results. keywords: filter, CapturedResultFilter, deduplication, cross verification, duplicate forget time needGenerateH3Content: true needAutoGenerateSidebar: true noTitleIndex: true --- # MultiFrameResultCrossFilter The `MultiFrameResultCrossFilter` class implements the `CapturedResultFilter` interface, providing filtering options for various types of captured results. ## Definition *Namespace:* Dynamsoft.Utility.Maui *Assembly:* Dynamsoft.Utility.Maui ```csharp class MultiFrameResultCrossFilter ``` ## Methods | Method | Description | | ------ | ----------- | | [`MultiFrameResultCrossFilter`](#multiframeresultcrossfilter-1) | The constructor. | | [`EnableResultDeduplication`](#enableresultdeduplication) | Enables or disables the deduplication process for one or multiple specific result item types. | | [`EnableResultCrossVerification`](#enableresultcrossverification) | Enables or disables the verification of one or multiple specific result item types. | | [`SetDuplicateForgetTime`](#setduplicateforgettime) | Sets the interval during which duplicates are disregarded for specific result item types. | | [`IsResultDeduplicationEnabled`](#isresultdeduplicationenabled) | Checks if deduplication is active for a given result item type. | | [`IsResultCrossVerificationEnabled`](#isresultcrossverificationenabled) | Checks if verification is active for a given result item type. | | [`GetDuplicateForgetTime`](#getduplicateforgettime) | Gets the interval during which duplicates are disregarded for specific result item types. | | [`EnableLatestOverlapping`](#enablelatestoverlapping) | Enables or disables the to-the-latest overlapping feature of one or multiple specific result item types. This feature can sharpenly increase the read-rate performance when decoding multiple barcodes under the video streaming. | | [`IsLatestOverlappingEnabled`](#islatestoverlappingenabled) | Checks if to-the-latest overlapping is active for a given result item type. | | [`GetMaxOverlappingFrames`](#getmaxoverlappingframes) | Get the maximum overlapping frames count for a given result item type. | | [`SetMaxOverlappingFrames`](#setmaxoverlappingframes) | Set the maximum overlapping frames count for a given result item type. | | [`SetResultCrossVerificationCriteria`](#setresultcrossverificationcriteria) | Sets the cross-verification criteria for specified result item types. | | [`GetResultCrossVerificationCriteria`](#getresultcrossverificationcriteria) | Gets the cross-verification criteria for a specified result item type. | ### MultiFrameResultCrossFilter The constructor. ```csharp MultiFrameResultCrossFilter(); ``` ### EnableResultCrossVerification Enables or disables the verification of one or multiple specific result item types. ```csharp void EnableResultCrossVerification(EnumCapturedResultItemType resultItemTypes, bool enable); ``` **Parameters** `resultItemTypes`: Specifies one or multiple specific result item types, which can be defined using [`EnumCapturedResultItemType`]({{ site.dcv_maui_api }}core/enum/captured-result-item-type.html). `enable`: A BOOL value that indicates whether to enable the result cross verification feature. > [!Note] > > The verification is enabled by default for `TextLine` & `DetectedQuad` type result items. ### IsResultCrossVerificationEnabled Checks if verification is active for a given result item type. ```csharp bool IsResultCrossVerificationEnabled(EnumCapturedResultItemType type); ``` **Parameters** `type`: Specifies the result item type with [`EnumCapturedResultItemType`]({{ site.dcv_maui_api }}core/enum/captured-result-item-type.html). **Return Value** Boolean indicating the status of verification for the specified type. ### EnableResultDeduplication Enables or disables the deduplication process for one or multiple specific result item types. ```csharp void EnableResultDeduplication(EnumCapturedResultItemType resultItemTypes, bool enable); ``` **Parameters** `resultItemTypes`: Specifies one or multiple specific result item types, which can be defined using [`EnumCapturedResultItemType`]({{ site.dcv_maui_api }}core/enum/captured-result-item-type.html). `enable`: A BOOL value that indicates whether to enable the result deduplication feature. **Remarks** Result deduplication is disabled by default. You can enable it and adjust the `DuplicateForgetTime` based on your requirements. ### IsResultDeduplicationEnabled Checks if deduplication is active for a given result item type. ```csharp bool IsResultDeduplicationEnabled(EnumCapturedResultItemType type); ``` **Parameters** `type`: Specifies the result item type with [`EnumCapturedResultItemType`]({{ site.dcv_maui_api }}core/enum/captured-result-item-type.html). **Return Value** Boolean indicating the deduplication status for the specified type. ### SetDuplicateForgetTime Sets the interval during which duplicates are disregarded for specific result item types. ```csharp void SetDuplicateForgetTime(EnumCapturedResultItemType resultItemTypes, int time); ``` **Parameters** `resultItemTypes`: Specifies one or multiple specific result item types, which can be defined using [`EnumCapturedResultItemType`]({{ site.dcv_maui_api }}core/enum/captured-result-item-type.html). `time`: The duplicate forget time of the specified capture result type. **Remarks** The default value is 3,000 milliseconds. This means that when result deduplication is enabled, identical results appearing within 3 seconds of each other will be filtered out by default. The maximum allowed value is 180,000 milliseconds. ### GetDuplicateForgetTime Gets the interval during which duplicates are disregarded for specific result item types. ```csharp int GetDuplicateForgetTime(EnumCapturedResultItemType type); ``` **Parameters** `type`: Specifies the result item type with [`EnumCapturedResultItemType`]({{ site.dcv_maui_api }}core/enum/captured-result-item-type.html). **Return Value** The set interval for the specified item type. ### EnableLatestOverlapping Enables or disables the to-the-latest overlapping feature of one or multiple specific result item types. This feature can sharpenly increase the read-rate performance when decoding multiple barcodes under the video streaming. ```csharp void EnableLatestOverlapping(int type, bool enabled); ``` **Parameters** `[in] type`: Specifies the result item type with [`EnumCapturedResultItemType`]({{ site.dcv_ios_api }}core/enum/captured-result-item-type.html?lang=maui). `[in] enabled`: A bool value to toggle to-the-latest overlapping on or off. ### IsLatestOverlappingEnabled Checks if to-the-latest overlapping is active for a given result item type. ```csharp bool IsLatestOverlappingEnabled(int type); ``` **Parameters** `[in] type`: Specifies the result item type with [`EnumCapturedResultItemType`]({{ site.dcv_ios_api }}core/enum/captured-result-item-type.html?lang=maui). **Return Value** A bool value indicating the status of to-the-latest overlapping for the specified type. ### GetMaxOverlappingFrames Get the maximum overlapping frames count for a given result item type. ```csharp int GetMaxOverlappingFrames(int type); ``` **Parameters** `[in] type`: Specifies the result item type with [`EnumCapturedResultItemType`]({{ site.dcv_ios_api }}core/enum/captured-result-item-type.html?lang=maui). **Return Value** The maximum overlapping frame count for the overlapping. ### SetMaxOverlappingFrames Set the maximum overlapping frames count for a given result item type. ```csharp void SetMaxOverlappingFrames(int type, int maxOverlappingFrames); ``` **Parameters** `[in] type`: Specifies the result item type with [`EnumCapturedResultItemType`]({{ site.dcv_ios_api }}core/enum/captured-result-item-type.html?lang=maui). `[in] maxOverlappingFrames`: The maximum overlapping frame count for the overlapping. ### SetResultCrossVerificationCriteria Sets the cross-verification criteria for specified result item types. This function allows customization of the multi-frame verification parameters, controlling how many frames are analyzed and how many consistent results are required. ```csharp void SetResultCrossVerificationCriteria(int resultItemTypes, CrossVerificationCriteria criteria); ``` **Parameters** `[in] resultItemTypes`: Specifies the result item types with [`CapturedResultItemType`]({{ site.dcv_maui_api }}core/enum/captured-result-item-type.html). `[in] criteria`: Specifies the cross-verification criteria with a [`CrossVerificationCriteria`]({{ site.dcv_maui_api }}utility/cross-verification-criteria.html) object. **Remarks** - Introduced in Dynamsoft Barcode Reader SDK version 11.4.1200 and Dynamsoft Capture Vision version 3.4.1200. The default criteria per result type are: | Result Type | `frameWindow` | `minConsistentFrames` | | --- | --- | --- | | Barcode (DBR) | 5 | 2 | | Text Line (DLR) | 5 | 2 | | Detected Quad / Deskewed Image (DDN) | 6 | 4 | ### GetResultCrossVerificationCriteria Gets the cross-verification criteria for a specified result item type. ```csharp CrossVerificationCriteria GetResultCrossVerificationCriteria(EnumCapturedResultItemType resultItemType); ``` **Parameters** `[in] resultItemType`: Specifies the result item type with [`CapturedResultItemType`]({{ site.dcv_maui_api }}core/enum/captured-result-item-type.html). **Return Value** The cross-verification criteria for the specified result item type, of type [`CrossVerificationCriteria`]({{ site.dcv_maui_api }}utility/cross-verification-criteria.html). **Remarks** - Introduced in Dynamsoft Barcode Reader SDK version 11.4.1200 and Dynamsoft Capture Vision version 3.4.1200.