# EasySpotDetector - Detecting Spots with Deep Learning
#### WARNING
Please note that **EasySpotDetector** is deprecated and will be removed in release 27.6.
## Purpose
**EasySpotDetector** uses local segmentation to extract salient objects from the background, then a deep learning classifier can sort them. It is applicable to many materials like films, coated surfaces, steel, battery foils, glass…
* Detection of faint defects and contamination, even in noisy images.
* Fast processing for in-line inspection.
* Compatible with acquisition from line-scan and 2D cameras.
* Optional pre-alignment of the region of interest on the part edges.
* Optional deep learning classification of the defects.
## Detecting Spots
To detect particles in an image:
* Create an [`ESpotDetector`](../../../doxygen_cpp/classeVision_1_1ESpotDetector.html) [.NET](../../../doxygen_cs/classeVision_1_1ESpotDetector.html) [Python](../../../doxygen_python/classeVision_1_1ESpotDetector.html) object and configure the detection parameters.
* Call [`ESpotDetector::Detect`](../../../doxygen_cpp/classeVision_1_1ESpotDetector.html#a3416d67167a4f86aeecb64a69e321004) [.NET](../../../doxygen_cs/classeVision_1_1ESpotDetector.html#a4be1466b4dae59820add60859175c382) [Python](../../../doxygen_python/classeVision_1_1ESpotDetector.html#a14f79385bca052894516514e59bc0c1d).
* Retrieve the detected [`ESpot`](../../../doxygen_cpp/classeVision_1_1ESpot.html) [.NET](../../../doxygen_cs/classeVision_1_1ESpot.html) [Python](../../../doxygen_python/classeVision_1_1ESpot.html) objects with [`ESpotDetector::GetSpots`](../../../doxygen_cpp/classeVision_1_1ESpotDetector.html#a09da2a19b74a2d9a4cd5c3ca8d74fa5f) [.NET](../../../doxygen_cs/classeVision_1_1ESpotDetector.html#a1b2f6cb968fcc5cdb2d7862561f91c96) [Python](../../../doxygen_python/classeVision_1_1ESpotDetector.html#ac8165774f7cca1072ab8b6207b2156df).
### C++
```cpp
#include
```
```cpp
using namespace eVision;
// Image constructor
EImageBW8 srcImage;
// Spot detector constructor
ESpotDetector detector;
// Setup the particle detector parameters with adequate values
EParticleDetectionParameters detectionParams;
detectionParams.Polarity = ESpotPolarity_Black;
detectionParams.Threshold = 12;
detectionParams.MinSize = 5;
detectionParams.MaxSize = 50;
detectionParams.MinArea = 25;
detector.SetParticleDetectionParameters(detectionParams);
// Activate the particle detection
detector.SetEnableParticleDetection(true);
// Perform the detection and get the number of detected spots
int32_t nSpot = detector.Detect(srcImage);
// Finally, get the detected spots
std::vector spots = detector.GetSpots();
```
### C#
```cs
using eVision;
```
```cs
// Image constructor
EImageBW8 srcImage = new EImageBW8();
// Spot detector constructor
ESpotDetector detector = new ESpotDetector();
// Setup the particle detector parameters with adequate values
EParticleDetectionParameters detectionParams;
detectionParams.Polarity = ESpotPolarity.Black;
detectionParams.Threshold = 12;
detectionParams.MinSize = 5;
detectionParams.MaxSize = 50;
detectionParams.MinArea = 25;
detector.ParticleDetectionParameters = detectionParams;
// Activate the particle detection
detector.EnableParticleDetection = true;
// Perform the detection and get the number of detected spots
uint nSpot = detector.Detect(srcImage);
// Finally, get the detected spots
ESpot[] spots = detector.Spots;
```
### Python
```py
import eVision
# Image constructor
srcImage = eVision.EImageBW8()
# QR code reader constructor
detector = eVision.ESpotDetector()
# Setup the particle detector parameters with adequate values
detectionParams = eVision.EParticleDetectionParameters()
detectionParams.Polarity = eVision.ESpotPolarity.Black
detectionParams.Threshold = 12
detectionParams.MinSize = 5
detectionParams.MaxSize = 50
detectionParams.MinArea = 25
detector.ParticleDetectionParameters = detectionParams
# Activate the particle detection
detector.EnableParticleDetection = True
# Perform the detection and get the number of detected spots
nSpot = detector.Detect(srcImage)
# Finally, get the detected spots
spots = detector.Spots
```
## Contents
Alignment, particle and scratch detection, and deep learning classification.
## Quick Links
List of all Classes, Structs and Enumerations of the **EasySpotDetector** library.
Easy to understand, ready to copy code snippets for the **EasySpotDetector** library.
#### SEE ALSO
The `EasySpotDetector` sample program detects particles and scratches and displays the results over the image: [EasySpotDetector](../../../resources/sample_programs/applicative_processing_tools/easyspotdetector.html.md).