30. FSWDR¶
30.1. Function Overview¶
Wide dynamic range synthesis of related parameters.
30.2. API Reference¶
CVI_ISP_SetFSWDRAttr : Set frame composition attribute parameters
CVI_ISP_GetFSWDRAttr : Get frame composition attribute parameters
CVI_ISP_SetWDRExposureAttr : Set WDR exposure attribute parameters
CVI_ISP_GetWDRExposureAttr : Get WDR exposure attribute parameters
30.2.1. CVI_ISP_SetFSWDRAttr¶
【Description】
Set frame composition attribute parameters
【Syntax】
CVI_S32 CVI_ISP_SetFSWDRAttr(VI_PIPE ViPipe, const ISP_FSWDR_ATTR_S *pstFSWDRAttr);
【Parameter】
Parameter |
Description |
Input/Output |
|---|---|---|
ViPipe |
VI_PIPE number |
Input |
pstFSWDRAttr |
Frame composition attribute parameters |
Input |
【Return Value】
Return value |
Description |
|---|---|
0 |
Success |
Non 0 |
Failure. An error code is returned. For details, see chapter Error Codes. |
【Requirement】
Header files: cvi_isp.h, cvi_comm_isp.h
Library files: libisp.so
【Note】
cv180x does not support this function
It is recommended that Gamma table be set to sRGB when wdr mode is enabled
【Example】
None.
【Related topic】
30.2.2. CVI_ISP_GetFSWDRAttr¶
【Description】
Get frame composition attribute parameters
【Syntax】
CVI_S32 CVI_ISP_GetFSWDRAttr(VI_PIPE ViPipe, ISP_FSWDR_ATTR_S *pstFSWDRAttr);
【Parameter】
Parameter |
Description |
Input/Output |
|---|---|---|
ViPipe |
VI_PIPE number |
Input |
pstFSWDRAttr |
Frame composition attribute parameters |
Output |
【Return Value】
Return value |
Description |
|---|---|
0 |
Success |
Non 0 |
Failure. An error code is returned. For details, see chapter Error Codes. |
【Requirement】
Header files: cvi_isp.h, cvi_comm_isp.h
Library files: libisp.so
【Note】
cv180x does not support this function
【Example】
It is recommended that Gamma table be set to sRGB when wdr mode is enabled
【Related topic】
30.2.3. CVI_ISP_SetWDRExposureAttr¶
【Description】
Set WDR exposure attribute parameters
【Syntax】
CVI_S32 CVI_ISP_SetWDRExposureAttr(VI_PIPE ViPipe, const ISP_WDR_EXPOSURE_ATTR_S *pstWDRExpAttr);
【Parameter】
Parameter |
Description |
Input/Output |
|---|---|---|
ViPipe |
VI_PIPE number |
Input |
pstWDRExposureAttr |
WDR exposure attribute parameters |
Input |
【Return Value】
Return value |
Description |
|---|---|
0 |
Success |
Non 0 |
Failure. An error code is returned. For details, see chapter Error Codes. |
【Requirement】
Header files: cvi_isp.h, cvi_comm_isp.h
Library files: libisp.so
【Note】
cv180x does not support this function
【Example】
It is recommended that Gamma table be set to sRGB when wdr mode is enabled
【Related topic】
30.2.4. CVI_ISP_GetWDRExposureAttr¶
【Description】
Get WDR exposure attribute parameters
【Syntax】
CVI_S32 CVI_ISP_GetWDRExposureAttr(VI_PIPE ViPipe, ISP_WDRExposureAttr_ATTR_S *pstWDRExposureAttr);
【Parameter】
Parameter |
Description |
Input/Output |
|---|---|---|
ViPipe |
VI_PIPE number |
Input |
pstWDRExposureAttr |
WDR exposure attribute parameters |
Output |
【Return Value】
Return value |
Description |
|---|---|
0 |
Success |
Non 0 |
Failure. An error code is returned. For details, see chapter Error Codes. |
【Requirement】
Header files: cvi_isp.h, cvi_comm_isp.h
Library files: libisp.so
【Note】
cv180x does not support this function
It is recommended that Gamma table be set to sRGB when wdr mode is enabled
【Example】
None.
【Related topic】
30.3. Data Types¶
ISP_FSWDR_MANUAL_ATTR_S : Frame composition attribute manual parameters
ISP_FSWDR_AUTO_ATTR_S : Frame composition attribute automatic parameters
ISP_FSWDR_ATTR_S : Frame composition attribute parameters
ISP_WDR_EXPOSURE_ATTR_S : WDR exposure attribute parameters
30.3.1. ISP_FSWDR_MANUAL_ATTR_S¶
【Description】
Frame composition attribute manual parameters
【Syntax】
typedef struct _ISP_FSWDR_MANUAL_ATTR_S {
CVI_U16 WDRCombineLongThr; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 WDRCombineShortThr; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 WDRCombineMaxWeight; /*RW; Range:[0x0, 0x100]*/
CVI_U16 WDRCombineMinWeight; /*RW; Range:[0x0, 0x100]*/
CVI_U8 WDRMtIn[4]; /*RW; Range:[0x0, 0xff]*/
CVI_U16 WDRMtOut[4]; /*RW; Range:[0x0, 0x100]*/
CVI_U16 WDRLongWgt; /*RW; Range:[0x0, 0x100]*/
CVI_U8 WDRCombineSNRAwareToleranceLevel; /*RW; Range:[0x0, 0xff]*/
CVI_U8 MergeModeAlpha; /*RW; Range:[0x0, 0xff]*/
CVI_U16 WDRMotionCombineLongThr; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 WDRMotionCombineShortThr; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 WDRMotionCombineMinWeight; /*RW; Range:[0x0, 0x100]*/
CVI_U16 WDRMotionCombineMaxWeight; /*RW; Range:[0x0, 0x100]*/
} ISP_FSWDR_MANUAL_ATTR_S;
【Member】
Member |
Description |
|---|---|
WDRCombineLongThr |
Long exposure critical value, image data below this critical value will only select long exposure data to synthesize WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRCombineShortThr |
Short exposure threshold, if the image data exceeds this threshold, only short exposure data will be selected to synthesize WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRCombineMinWeight |
The minimum weight value for long and short exposure image data fusion. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. (This value must be less than or equal to WDRCombineMaxWeight) Value range: [0x0, 0x100] Data type: CVI_U8 |
WDRCombineMaxWeight |
Long and short exposure image data are fused with the highest weight value. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. (This value must be greater than or equal to WDRCombineMinWeight) Value range: [0x0, 0x100] Data type: CVI_U8 |
WDRMotionCombineLongThr |
Motion detection information, long exposure threshold, image data below this threshold will only select long exposure data to synthesize a WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRMotionCombineShortThr |
Motion detection information, short exposure critical value, image data exceeding this critical value will only select short exposure data to synthesize WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRMotionCombineMinWeight |
Motion detection information, long and short exposure image data fusion minimum weight value. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. Value range: [0x0, 0x100] Data type: CVI_U16 |
WDRMotionCombineMaxWeight |
Motion detection information, long and short exposure image data fusion with the highest weight value. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. Value range: [0x0, 0x100] Data type: CVI_U16 |
WDRMtIn[4] |
An array of four numeric values. Define the amount of motion of the input object, the larger the value, the greater the amount of motion. Value range: [0x0, 0xff] Data type: CVI_U8 |
WDRMtOut[4] |
An array of four numeric values. Define the motion gain corresponding to the motion of the input object. The larger the value, the more inclined to output a custom WDR fusion result, which is debuged in conjunction with WDRType. Value range: [0x0, 0x100] Data type: CVI_U16 |
WDRLongWgt |
When WDRType is set to 2, set the fusion weight for long exposure. It takes effect only when MotionCompEnable is enabled. Value range: [0x0, 0x100] Data type: CVI_U16 |
MergeModeAlpha |
The ratio of mobile information fusion when MergeMode is set to 1. The larger the value is, the more the proportion of short frame motion information is in the fusion. On the contrary, the proportion of long frame motion information is more. Value range: [0x0, 0xff] Data type: CVI_U8 |
WDRCombineSNRAwareToleranceLevel |
Noise Tolerance Strength of Short Frame Noise SNR Adaptive Value range: [0x0, 0xff] Data type: CVI_U16 |
【Note】
The preceding parameter cv180x is not supported
【Related Data Type and Interface】
30.3.2. ISP_FSWDR_AUTO_ATTR_S¶
【Description】
Frame composition attribute automatic parameters
【Syntax】
typedef struct cviISP_FSWDRAttr_AUTO_ATTR_S {
CVI_U16 WDRCombineLongThr[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 WDRCombineShortThr[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 WDRCombineMaxWeight[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0x100]*/
CVI_U16 WDRCombineMinWeight[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0x100]*/
CVI_U8 WDRMtIn[4][ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0xff]*/
CVI_U16 WDRMtOut[4][ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0x100]*/
CVI_U16 WDRLongWgt[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0x100]*/
CVI_U8 WDRCombineSNRAwareToleranceLevel[ISP_AUTO_LV_NUM];
CVI_U8 MergeModeAlpha[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0xff]*/
CVI_U16 WDRMotionCombineLongThr[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 WDRMotionCombineShortThr[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 WDRMotionCombineMinWeight[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0x100]*/
CVI_U16 WDRMotionCombineMaxWeight[ISP_AUTO_LV_NUM]; /*RW; Range:[0x0, 0x100]*/
}ISP_FSWDR_AUTO_ATTR_S;
【Member】
Member |
Description |
|---|---|
WDRCombineLongThr |
Long exposure critical value, image data below this critical value will only select long exposure data to synthesize WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRCombineMinWeight |
The minimum weight value for long and short exposure image data fusion. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. (This value must be less than or equal to WDRCombineMaxWeight) Value range: [0x0, 0xff] Data type: CVI_U8 |
WDRMotionCombineLongThr |
Motion detection information, long exposure threshold, image data below this threshold will only select long exposure data to synthesize a WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRMotionCombineShortThr |
Motion detection information, short exposure critical value, image data exceeding this critical value will only select short exposure data to synthesize WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRMotionCombineMinWeight |
Motion detection information, long and short exposure image data fusion minimum weight value. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. Value range: [0x0, 0x100] Data type: CVI_U16 |
WDRMotionCombineMaxWeight |
Motion detection information, long and short exposure image data fusion with the highest weight value. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. Value range: [0x0, 0x100] Data type: CVI_U16 |
MergeModeAlpha |
The ratio of mobile information fusion when MergeMode is set to 1. The larger the value is, the more the proportion of short frame motion information is in the fusion. On the contrary, the proportion of long frame motion information is more. Value range: [0x0, 0xff] Data type: CVI_U8 |
WDRCombineSNRAwareToleranceLevel |
Noise Tolerance Strength of Short Frame Noise SNR Adaptive Value range: [0x0, 0xBB8] Data type: CVI_U16 |
WDRCombineLongThr |
Long exposure critical value, image data below this critical value will only select long exposure data to synthesize WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRCombineShortThr |
Short exposure threshold, if the image data exceeds this threshold, only short exposure data will be selected to synthesize WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRCombineMinWeight |
The minimum weight value for long and short exposure image data fusion. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. (This value must be less than or equal to WDRCombineMaxWeight) Value range: [0x0, 0x100] Data type: CVI_U8 |
WDRCombineMaxWeight |
Long and short exposure image data are fused with the highest weight value. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. (This value must be greater than or equal to WDRCombineMinWeight) Value range: [0x0, 0x100] Data type: CVI_U8 |
WDRMotionCombineLongThr |
Motion detection information, long exposure threshold, image data below this threshold will only select long exposure data to synthesize a WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRMotionCombineShortThr |
Motion detection information, short exposure critical value, image data exceeding this critical value will only select short exposure data to synthesize WDR image. Value range: [0x0, 0xfff] Data type: CVI_U16 |
WDRMotionCombineMinWeight |
Motion detection information, long and short exposure image data fusion minimum weight value. The larger the weight value, the more the proportion of long exposure will be in the fusion time, and vice versa, the more proportion of short exposure will be. Value range: [0x0, 0x100] Data type: CVI_U16 |
【Note】
The preceding parameter cv180x is not supported
【Related Data Type and Interface】
30.3.3. ISP_FSWDR_ATTR_S¶
【Description】
Frame composition attribute parameters
【Syntax】
typedef struct _ISP_FSWDR_ATTR_S {
CVI_BOOL Enable; /*RW; Range:[0, 1]*/
ISP_OP_TYPE_E enOpType; /*RW; Range:[0, 1]*/
CVI_U8 UpdateInterval; /*RW; Range:[0x1, 0xFF]*/
CVI_BOOL MotionCompEnable; /*RW; Range:[0, 1]*/
CVI_U8 TuningMode; /*RW; Range:[0x0, 0x9]*/
CVI_BOOL WDRDCMode;; /*RW; Range:[0, 1]*/
CVI_BOOL WDRLumaMode; /*RW; Range:[0x0, 0x1]*/
CVI_U8 WDRType; /*RW; Range:[0x0, 0x2]*/
CVI_BOOL WDRCombineSNRAwareEn; /*RW; Range:[0, 1]*/
CVI_U16 WDRCombineSNRAwareLowThr; /*RW; Range:[0x0, 0xffff]*/
CVI_U16 WDRCombineSNRAwareHighThr; /*RW; Range:[0x0, 0xffff]*/
CVI_U16 WDRCombineSNRAwareSmoothLevel; /*RW; Range:[0x0, 0xbb8]*/
CVI_BOOL LocalToneRefinedDCMode; /*RW; Range:[0, 1]*/
CVI_BOOL LocalToneRefinedLumaMode; /*RW; Range:[0, 1]*/
CVI_U16 DarkToneRefinedThrL; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 DarkToneRefinedThrH; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 DarkToneRefinedMaxWeight; /*RW; Range:[0x0, 0x100]*/
CVI_U16 DarkToneRefinedMinWeight; /*RW; Range:[0x0, 0x100]*/
CVI_U16 BrightToneRefinedThrL; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 BrightToneRefinedThrH; /*RW; Range:[0x0, 0xfff]*/
CVI_U16 BrightToneRefinedMaxWeight; /*RW; Range:[0x0, 0x100]*/
CVI_U16 BrightToneRefinedMinWeight; /*RW; Range:[0x0, 0x100]*/
CVI_U8 WDRMotionFusionMode; /*RW; Range:[0x0, 0x3]*/
CVI_BOOL MtMode; /*RW; Range:[0, 1]*/
ISP_FSWDR_MANUAL_ATTR_S stManual;
ISP_FSWDR_AUTO_ATTR_S stAuto;
} ISP_FSWDR_ATTR_S;
【Member】
Member |
Description |
|---|---|
Enable |
The WDR module is enabled. 0: off. 1: Enabled. Value range: [0, 1] Data type: CVI_BOOL |
UpdateInterval |
Affects the parameter update terval, the larger the value, the slower the screen changes and the better the performance. Value range: [0x0, 0xff] Data type: CVI_U8 |
MotionCompEnable |
WDR motion detection enable switch. 0: off. 1: Enabled. Value range: [0, 1] Data type: CVI_BOOL |
WDRDCMode |
Long-short exposure fusion mode 0: normal mode, adjusted by WDRLumaMode 1: DC mode Value range: [0, 1] Data type: CVI_BOOL |
WDRLumaMode |
Brightness Calculation Mode 0: Take the maximum value of R/G/B. 1: Take the Luma value. Value range: [0, 1] Data type: CVI_BOOL |
WDRType |
Custom WDR fusion mode. 0: Output the short exposure value multiplied by the exposure ratio. 1: Output long exposure value. 2: Output the value after long-short exposure fusion. The weight of long exposure is WDRLongWgt. It takes effect only when MotionCompEnable is enabled. Value range: [0, 2] Data type: CVI_U8 |
WDRDitherEnable |
Enable the dither function for the long exposure threshold. 0: off. 1: Enabled. Value range: [0, 1] Data type: CVI_U8 |
WDRDitherBit |
Set how many bits of dither to generate. Value range: [0, 0xf] Data type: CVI_U8 |
WDRDitherRange |
Sets the range between long and short exposure thresholds plus dither. Value range: [0, 0xfff] Data type: CVI_U16 |
TuningMode |
Debug mode, output visual auxiliary information to help users debug 0: no visual auxiliary information 1: output short frame information in SDR form. 2: Output short frame information in HDR form. 3: Output long frame information in SDR form. Value range: [0x0, 0x3] Data type: CVI_U8 |
WDRCombineSNRAwareEn |
Wide dynamic fusion mode with SNR awareness is enabled. It can adaptively determine the fusion ratio of long and short frames according to the noise of short frames. 0: off. 1: Enabled. Value range: [0, 1] Data type: CVI_BOOL |
WDRCombineSNRAwareLowThr |
Short frame noise SNR adaptive low threshold. When the estimated noise of the short frame is lower than the low threshold, the general long and short frame fusion is performed. When the estimated noise of the short frame is higher than the high threshold, the SNR adaptive fusion is performed according to the SNRAwareToleranceLevel intensity. The noise is between the low critical value and the high critical value. Then perform SNR adaptive fusion according to the ratio. Value range: [0x0, 0xffff] Data type: CVI_U16 |
WDRCombineSNRAwareHighThr |
Short frame noise SNR adaptive high threshold. When the estimated noise of the short frame is lower than the low threshold, the general long and short frame fusion is performed. When the estimated noise of the short frame is higher than the high threshold, the SNR adaptive fusion is performed according to the SNRAwareToleranceLevel intensity. The noise is between the low critical value and the high critical value. Then perform SNR adaptive fusion according to the ratio. Value range: [0x0, 0xffff] Data type: CVI_U16 |
WDRCombineSNRAwareSmoothLevel |
The smoothness of time-domain changes in short-frame noise SNR adaptation Value range: [0x0, 0xbb8] Data type: CVI_U16 |
LocalToneRefinedDCMode |
Whether local tone refine refers to DC information 0: Do not use DC information, refer to LocalToneRefinedLumaMode 1: Use DC information Value range: [0x0, 0x1] Data type: CVI_BOOL |
LocalToneRefinedLumaMode |
local tone refine luma mode 0: Use MaxRGB mode 1: use luma mode Value range: [0x0, 0x1] Data type: CVI_BOOL |
DarkToneRefinedThrL |
Adjustment of dark tone refine Value range: [0, 0xfff] Data type: CVI_U16 |
DarkToneRefinedThrH |
Adjustment of dark tone refine Value range: [0, 0xfff] Data type: CVI_U16 |
DarkToneRefinedMaxWeight |
Adjustment of dark tone refine Value range: [0, 0xfff] Data type: CVI_U16 |
DarkToneRefinedMinWeight |
Adjustment of dark tone refine Value range: [0, 0xfff] Data type: CVI_U16 |
BrightToneRefinedThrL |
Adjustment of bright tone refine Value range: [0, 0xfff] Data type: CVI_U16 |
BrightToneRefinedThrH |
Adjustment of bright tone refine Value range: [0, 0xfff] Data type: CVI_U16 |
BrightToneRefinedMaxWeight |
Adjustment of bright tone refine Value range: [0, 0xfff] Data type: CVI_U16 |
BrightToneRefinedMinWeight |
Adjustment of bright tone refine Value range: [0, 0xfff] Data type: CVI_U16 |
WDRMotionFusionMode |
motion detection mode 0: Linear / Long mode 1: Max mode. (default) 2: Merge mode. 3: LUT mode. Value range: [0, 0x3] Data type: CVI_U8 |
MtMode |
Motion mode: 0: Motion IIR (represents that the detected motion has been processed by IIR) 1: Motion history (meaning that the detected motion has not been processed by IIR) Value range: [0x0, 0x1] Data type: CVI_BOOL |
enOpType |
job type OP_TYPE_AUTO: automatic mode OP_TYPE_MANUAL: manual mode |
stManual |
Manual Mode parameter Properties |
stAuto |
Auto Mode parameter Properties |
【Note】
The preceding parameter cv180x is not supported
【Related Data Type and Interface】
30.3.4. ISP_WDR_EXPOSURE_ATTR_S¶
【Description】
WDR exposure attribute parameters
【Syntax】
typedef struct _ISP_WDR_EXPOSURE_ATTR_S {
ISP_OP_TYPE_E enExpRatioType;
CVI_U32 au32ExpRatio[WDR_EXP_RATIO_NUM];
CVI_U32 u32ExpRatioMax;
CVI_U32 u32ExpRatioMin;
CVI_U16 u16Tolerance;
CVI_U16 u16Speed;
CVI_U16 u16RatioBias;
CVI_U8 u8SECompensation;
CVI_U16 u16SEHisThr;
CVI_U16 u16SEHisCntRatio1;
CVI_U16 u16SEHisCntRatio2;
CVI_U32 u16SEHis255CntThr1;
CVI_U32 u16SEHis255CntThr2;
CVI_U8 au8LEAdjustTargetMin[LV_TOTAL_NUM];
CVI_U8 au8LEAdjustTargetMax[LV_TOTAL_NUM];
CVI_U8 au8SEAdjustTargetMin[LV_TOTAL_NUM];
CVI_U8 au8SEAdjustTargetMax[LV_TOTAL_NUM];
CVI_U8 u8AdjustTargetDetectFrmNum;
CVI_U32 u32DiffPixelNum;
CVI_U16 u16LELowBinThr;
CVI_U16 u16LEHighBinThr;
CVI_U16 u16SELowBinThr;
CVI_U16 u16SEHighBinThr;
CVI_U8 au8FrameAvgLumaMin[LV_TOTAL_NUM];
CVI_U8 au8FrameAvgLumaMax[LV_TOTAL_NUM];
} ISP_WDR_EXPOSURE_ATTR_S;
【Member】
Member |
Description |
|---|---|
enExpRatioType |
Description |
au32ExpRatio[WDR_EXP_RATIO_NUM] |
Only valid in multi frame synthesis WDR mode. au32ExpRatio is invalid when enExpRatioType is OP_TYPE_AUTO. When enExpRatioType is OP_TYPE_MANUAL, au32ExpRatio is readable and writable, which indicates the expected exposure ratio of two adjacent frames of multi frame synthetic WDR. Value range:[0x40, 0xFFF] |
u32ExpRatioMax |
Only valid in multi frame synthesis WDR mode. When enExpRatioType is OP_TYPE_AUTO, u32ExpRatioMax is the maximum value of the exposure time ratio of the longest frame to the shortest frame. When enExpRatioType is OP_TYPE_MANUAL, u32ExpRatioMax is invalid. 6bit decimal precision, 0x40 means that the exposure ratio is 1 times. |
u32ExpRatioMin |
Only valid in multi frame synthesis WDR mode. When enExpRatioType is OP_TYPE_AUTO, u32ExpRatioMax is the minimum value of the exposure time ratio of the longest frame to the shortest frame. When enExpRatioType is OP_TYPE_MANUAL, u32ExpRatioMax is invalid. The format is 6.6bit fixed-point without sign, and 0x40 means that the ratio of long frame exposure time to short frame exposure time is one time. The default value is 0x40. Value range:[0x40, u32ExpRatioMax] |
u16Tolerance |
Description |
u16Speed |
The auto exposure ratio adjustment speed. This is only effective in two frame synthesis WDR mode. When enExpRatioType is OP_TYPE_AUTO, the higher the value is, the faster the adjustment speed is. The default value is 0x20. Value range:[0x0, 0xFF] |
u16RatioBias |
The exposure ratio deviation value which is only valid in multi frame synthesis WDR mode. When enExpRatioType is OP_TYPE_AUTO, the higher the value, the greater the auto exposure ratio. The default value is 0x400, which means that the calculation result of the auto exposure ratio algorithm will not be adjusted. The exposure ratio adjusted by this value is limited by the maximum / minimum exposure ratio. Value range:[0x0, 0xFFFF] |
u8SECompensation |
Adjust the target brightness value of short detection screen Value range:[0x0, 0xFF] |
u16SEHisThr |
Calculate the threshold value of exposure ratio when the short detection frame exceeds the long detection frame (1x = 64) |
u16SEHisCntRatio1 |
If the number of short detection histogram bin 255 is greater than this threshold, the target brightness of short detection will be reduced |
u16SEHisCntRatio2 |
If the number of short detection histogram bin 255 is less than this threshold, the target brightness of the reduced short detection will return to the original target brightness |
u16SEHis255CntThr1 |
If the number of long detection histogram bin 255 is greater than this threshold, the target brightness of the long detection will be reduced |
u16SEHis255CntThr2 |
If the number of long detection histogram bin 255 is less than this threshold, the target brightness of the reduced long detection will return to the original target brightness |
au8LEAdjustTargetMin[WDR_LV_TARGET_NUM] |
Target min of each LV in long frame 40,40, 40, 40, 40, 40, 45, 50, 60, 60, 60, 60, 60, 60, 60, 60 |
au8LEAdjustTargetMax[WDR_LV_TARGET_NUM] |
Target max of each LV in long frame 50,50, 50, 50, 50, 50, 60, 70, 85, 100, 110, 110, 120, 120, 120, 120 |
au8SEAdjustTargetMin[WDR_LV_TARGET_NUM] |
Target min of each LV in short frame 20,20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20 |
au8SEAdjustTargetMax[WDR_LV_TARGET_NUM] |
Target max of each LV in short frame 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60 |
u8AdjustTargetDetectFrmNum |
The number of frames that need to be detected continuously when adjusting the brightness of long and short detection targets |
u32DiffPixelNum |
The threshold value of pixel number of long detection histogram bin 255. Beyond this value, the target brightness of long exposure will be reduced |
U16LELowBinThr |
Only the window whose brightness is greater than this threshold can add the AE long-term light metering |
U16LEHighBinThr |
Only windows whose brightness is less than this threshold can add the AE long-term light metering |
U16SELowBinThr |
Only windows whose short detection brightness is greater than this threshold can add the AE long-term light metering |
U16SEHighBinThr |
Only windows whose short detection brightness is less than this threshold can add the AE long-term light metering |
au8FrameAvgLumaMin[LV_TOTAL_NUM] |
This parameter is currently not used Value range: [0, 0xff] Data type: CVI_U8 |
au8FrameAvgLumaMax[LV_TOTAL_NUM] |
The upper limit of the average luminance of long-term detection Value range: [0, 0xff] Data type: CVI_U8 |
【Note】
The preceding parameter cv180x is not supported
【Related Data Type and Interface】