---
layout: default-layout
title: struct SimplifiedDocumentNormalizerSettings - Dynamsoft Capture Vision C++ Edition API Reference
description: This page shows the SimplifiedDocumentNormalizerSettings struct of the CCaptureVisionRouter class of the Dynamsoft Capture Vision C++ Edition.
keywords: struct, c++, SimplifiedDocumentNormalizerSettings
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breadcrumbText: CVR C++ SimplifiedDocumentNormalizerSettings Struct
---
# SimplifiedDocumentNormalizerSettings
The `SimplifiedDocumentNormalizerSettings` struct contains settings for document normalization. It is a sub-parameter of `SimplifiedCaptureVisionSettings`
```cpp
typedef struct tagSimplifiedDocumentNormalizerSettings
{
GrayscaleTransformationMode grayscaleTransformationModes[8];
GrayscaleEnhancementMode grayscaleEnhancementModes[8];
ImageColourMode colourMode;
int pageSize[2];
int brightness;
int contrast;
int maxThreadsInOneTask;
int scaleDownThreshold;
int minQuadrilateralAreaRatio;
int expectedDocumentsCount;
char reserved[504];
} SimplifiedDocumentNormalizerSettings;
```
## Attributes Summary
| Attribute | Type |
| --------- | ---- |
| [`grayscaleTransformationModes`](#grayscaletransformationmodes) | *GrayscaleTransformationMode[8]* |
| [`grayscaleEnhancementModes`](#grayscaleenhancementmodes) | *GrayscaleEnhancementMode[8]* |
| [`colourMode`](#colourmode) | *int* |
| [`pageSize`](#pagesize) | *int[2]* |
| [`brightness`](#brightness) | *int* |
| [`contrast`](#contrast) | *int* |
| [`maxThreadsInOneTask`](#maxthreadsinonetask) | *int* |
| [`scaleDownThreshold`](#scaledownthreshold) | *int* |
| [`minQuadrilateralAreaRatio`](#minquadrilateralarearatio) | *int* |
| [`expectedDocumentsCount`](#expecteddocumentscount) | *int* |
| [`reserved`](#reserved) | *char[504]* |
### grayscaleTransformationModes
Set the grayscale transformation modes with an array of enumeration `GrayscaleTransformationMode`. View the reference page of `GrayscaleTransformationMode` for more detail about grayscale transformation modes.
```cpp
GrayscaleTransformationMode grayscaleTransformationModes[8];
```
### grayscaleEnhancementModes
Set the grayscale enhancement modes with an array of enumeration `GrayscaleEnhancementMode`. View the reference page of `GrayscaleEnhancementMode` for more detail about grayscale enhancement modes.
```cpp
GrayscaleEnhancementMode grayscaleEnhancementModes[8];
```
### colourMode
Set the output image colour mode.
```cpp
ImageColourMode colourMode;
```
**Value Range**
"ICM_BINARY", "ICM_GRAYSCALE", "ICM_COLOUR"
**Default value**
"ICM_COLOUR"
### pageSize
Set the page size (width by height in pixels) of the normalized image.
```cpp
int pageSize[2];
```
### brightness
Set the brightness of the normalized image.
```cpp
int brightness;
```
**Value Range**
[-100,100]
**Default value**
0
### contrast
Set the contrast of the normalized image.
```cpp
int contrast
```
**Value Range**
[-100,100]
**Default value**
0
### maxThreadsInOneTask
Set the maximum available threads count in one document normalization task.
```cpp
int maxThreadsInOneTask;
```
**Value Range**
[1, 256]
**Default value**
4
**Remarks**
To keep a balance between speed and quality, the library concurrently runs four different threads by default.
### scaleDownThreshold
Sets the threshold for the image shrinking.
```cpp
int scaleDownThreshold;
```
**Value Range**
[512, 0x7fffffff]
**Default Value**
2300
**Remarks**
If the shorter edge size is larger than the given threshold value, the library will calculate the required height and width of the barcode image and shrink the image to that size before detection. Otherwise, the library will perform document detection on the original image.
### minQuadrilateralAreaRatio
Set the minimum ratio between the target document area and the total image area. Only those exceeding this value will be output (measured in percentages).
```cpp
int minQuadrilateralAreaRatio;
```
**Value Range**
[0, 100]
**Default Value**
0
### expectedDocumentsCount
Set the number of documents expected to be detected.
```cpp
int expectedDocumentsCount;
```
**Value Range**
[0, 0x7fffffff]
**Default Value**
1
### reserved
Reserved for future use.
```cpp
char reserved[504];
```