9. DPC¶

9.1. Functional Description¶

DPC allnameis Defect Pixel Correction, cancorrect Sensor onhaveproblem defectivepoint.

correctmethodhavetwokind, respectivelyisstaticcorrectionanddynamiccorrection.

staticcorrection:correctionwhenpartisdarkpointcorrectionandbrightpointcorrection.

brightpointcorrectionwhen, handlelensshadeblack, startdefectivepointcalibrationprogram.

darkpointcorrectionwhen, notshadeblackinflatflatbackgroundscenewhensuch asgraydegreeboxbefore, Adjustexposuremakeimageoverallbrightnessapproximatelyis 50%.

staticdefectivepointmostmultipleallow 4095 defectivepoint.

dynamiccorrection:usethismethodwhen, notusecorrectionnumberdataandisdirectdynamicdeterminedefectivepoint, andandaddusingcorrect. inlownoisewhenforimagecolor casthavehelp, butifstrengthtoostrongcancanwillcauseimagedetailsdecreaselow.

[Important Notice]

thisin cv184x systemcolumnonlyusetodynamiccorrection

9.2. API Reference¶

CVI_ISP_SetDPDynamicAttr : Setdynamicdefectivepointcorrectionattribute
CVI_ISP_GetDPDynamicAttr : Getdynamicdefectivepointcorrectionattribute

9.2.1. CVI_ISP_SetDPDynamicAttr¶

[Description]

Setdynamicdefectivepointcorrectionattribute

[Syntax]

CVI_S32 CVI_ISP_SetDPDynamicAttr(VI_PIPE ViPipe, const ISP_DP_DYNAMIC_ATTR_S *pstDPDynamicAttr);

[Parameters]

Parameter Name	Description	Input/Output
ViPipe	VI_PIPE No.	Input
pstDPDynamicAttr	dynamicdefectivepointcorrectionattribute	Input

[Return Value]

Return Value	Description
0	Success
Non-zero	Failure, whose value is Error Code.

[Requirements]

Header File: cvi_isp.h, cvi_comm_isp.h
Library File: libisp.so

[Note]

None

[Example]

VI_PIPE ViPipe = 0;
ISP_DP_DYNAMIC_ATTR_S stAttr;
CVI_ISP_GetDPDynamicAttr(ViPipe, &stAttr);
stAttr.enOpType = OP_TYPE_AUTO;
CVI_ISP_SetDPDynamicAttr(ViPipe, &stAttr);

[Related Topics]

CVI_ISP_GetDPDynamicAttr

9.2.2. CVI_ISP_GetDPDynamicAttr¶

[Description]

Getdynamicdefectivepointcorrectionattribute

[Syntax]

CVI_S32 CVI_ISP_GetDPDynamicAttr(VI_PIPE ViPipe, ISP_DP_DYNAMIC_ATTR_S *pstDPDynamicAttr);

[Parameters]

Parameter Name	Description	Input/Output
ViPipe	VI_PIPE No.	Input
pstDPDynamicAttr	dynamicdefectivepointcorrectionattribute	output

[Return Value]

Return Value	Description
0	Success
Non-zero	Failure, whose value is Error Code.

[Requirements]

Header File: cvi_isp.h, cvi_comm_isp.h
Library File: libisp.so

[Note]

None

[Example]

None

[Related Topics]

CVI_ISP_SetDPDynamicAttr

9.3. Data Types¶

ISP_DP_DYNAMIC_MANUAL_ATTR_S : Manual Definitiondynamicdefectivepointcorrectionattribute
ISP_DP_DYNAMIC_AUTO_ATTR_S : Automatic Definitiondynamicdefectivepointcorrectionattribute
ISP_DP_DYNAMIC_ATTR_S : Define dynamicdefectivepointcorrectionattribute

9.3.1. ISP_DP_DYNAMIC_MANUAL_ATTR_S¶

[Description]

Manual Definitiondynamicdefectivepointcorrectionattribute

[Definition]

typedef struct _ISP_DP_DYNAMIC_MANUAL_ATTR_S {
        CVI_U8 DefectCnt1; /*Rw; Range:[0, 16]*/
        CVI_U8 DefectCnt2; /*Rw; Range:[0, 16]*/
        CVI_U8 AdvMode; /*Rw; Range:[0, 1]*/
        CVI_U8 AvgMode; /*Rw; Range:[0, 1]*/
} ISP_DP_DYNAMIC_MANUAL_ATTR_S;

[Members]

Member Name	Description
DefectCnt1	defectivepointdeterminelogic threshold1 Value Range: [0, 16] Data Types: CVI_U8
DefectCnt2	defectivepointdeterminelogic threshold2 Generally DefectCnt2 need tosmallin DefectCnt1 Value Range: [0, 16] Data Types: CVI_U8
AdvMode	seconddirectional compensationEnable. 0:Disable, the compensation method depends on AvgMode. 1:Enable. Value Range: [0, 1] Data Types: CVI_U8
AvgMode	defectivepointcompensationmode. 0: directional compensation. 1: non-directional compensation (average compensation). Value Range: [0, 1] Data Types: CVI_U8

[Precautions]

None

[Related Data Types and Interfaces]

9.3.2. ISP_DP_DYNAMIC_AUTO_ATTR_S¶

[Description]

Automatic Definitiondynamicdefectivepointcorrectionattribute

[Definition]

typedef struct _ISP_DP_DYNAMIC_AUTO_ATTR_S {
        CVI_U8 DefectCnt1[ISP_AUTO_ISO_STRENGTH_NUM]; /*Rw; Range:[0, 16]*/
        CVI_U8 DefectCnt2[ISP_AUTO_ISO_STRENGTH_NUM]; /*Rw; Range:[0, 16]*/
        CVI_U8 AdvMode[ISP_AUTO_ISO_STRENGTH_NUM]; /*Rw; Range:[0, 1]*/
        CVI_U8 AvgMode[ISP_AUTO_ISO_STRENGTH_NUM]; /*Rw; Range:[0, 1]*/
} ISP_DP_DYNAMIC_AUTO_ATTR_S;

[Members]

Member Name	Description
DefectCnt1	defectivepointdeterminelogic threshold1 Value Range: [0, 16] Data Types: CVI_U8
DefectCnt2	defectivepointdeterminelogic threshold2 Generally DefectCnt2 need tosmallin DefectCnt1 Value Range: [0, 16] Data Types: CVI_U8
AdvMode	seconddirectional compensationEnable. 0:Disable, the compensation method depends on AvgMode. 1:Enable. Value Range: [0, 1] Data Types: CVI_U8
AvgMode	defectivepointcompensationmode. 0: directional compensation. 1: non-directional compensation (average compensation). Value Range: [0, 1] Data Types: CVI_U8

[Precautions]

None

[Related Data Types and Interfaces]

9.3.3. ISP_DP_DYNAMIC_ATTR_S¶

[Description]

Define dynamicdefectivepointcorrectionattribute

[Definition]

typedef struct _ISP_DP_DYNAMIC_ATTR_S {
        CVI_BOOL Enable; /*Rw; Range:[0, 1]*/
        ISP_OP_TYPE_E enOpType;
        CVI_U8 UpdateInterval; /*Rw; Range:[0, 255]*/
        CVI_U16 DarkDefectThresh[DP_THR_LUT_NUM]; /*Rw; Range:[0, 4095]*/
        CVI_U16 BrightDefectThresh[DP_THR_LUT_NUM]; /*Rw; Range:[0, 4095]*/
        CVI_U16 DarkDefectThreshOffset; /*Rw; Range:[0, 4095]*/
        CVI_U16 BrightDefectThreshOffset; /*Rw; Range:[0, 4095]*/
        CVI_U8 TransitionWeight; /*Rw; Range:[0, 255]*/
        ISP_DP_DYNAMIC_MANUAL_ATTR_S stManual;
        ISP_DP_DYNAMIC_AUTO_ATTR_S stAuto;
} ISP_DP_DYNAMIC_ATTR_S;

[Members]

Member Name	Description
Enable	module enable switch Value Range: [0, 1] Data Types: CVI_BOOL
enOpType	operation type OP_TYPE_AUTO: automatic mode OP_TYPE_MANUAL: manual mode Data Types: ISP_OP_TYPE_E
UpdateInterval	affects the parameter update interval,the larger the value, the slower the image changes,the better the performance. Value Range: [0, 255] Data Types: CVI_U8
DarkDefectThresh	according tolumalook upthreshold1 Lut, fordarkdefectivepoint. Value Range: [0, 4095] Data Types: CVI_U16
BrightDefectThresh	according tolumalook upthreshold1 Lut,forbrightdefectivepoint. Value Range: [0, 4095] Data Types: CVI_U16
DarkDefectThreshOffset	according tobiasmoveamountseekobtainthreshold2, fordarkdefectivepoint. Value Range: [0, 4095] Data Types: CVI_U16
BrightDefectThreshOffset	according tobiasmoveamountseekobtainthreshold2, forbrightdefectivepoint. Value Range: [0, 4095] Data Types: CVI_U16
TransitionWeight	whendefectivepointdetermineconditionprocessinthroughtransitionrangeinsidewhen (notcorrectsetisnotisdefectivepoint) , thisweightdeterminesisperformdpcalsoisnotperform ratioexample. Value Range: [0, 255] Data Types: CVI_U8
stManual	manual parameters
stAuto	automatic parameters

[Precautions]

None

[Related Data Types and Interfaces]