# Using eVision This section describes the usage of all **eVision** libraries. ## Libraries - [**EasyImage** - pre-processing images](general_purpose/easyimage/index.html.md) - [**EasyColor** - pre-processing color images](general_purpose/easycolor/index.html.md) - [**Easy3D** - using the 3D toolset](3d_processing/easy3d/index.html.md) - [**Easy3DLaserLine** - line extraction and calibration](3d_processing/easy3dlaserline.html.md) - [**Easy3DObject** - extracting 3D objects](3d_processing/easy3dobject.html.md) - [**Easy3DMatch** - 3D alignment and comparison](3d_processing/easy3dmatch.html.md) - [**EasyObject** - analyzing blobs](matching_and_measurement/easyobject/index.html.md) - [**EasyGauge** - measuring down to sub-pixel](matching_and_measurement/easygauge/index.html.md) - [**EasyFind** - matching geometric patterns](matching_and_measurement/easyfind/index.html.md) - [**EasyMatch** - matching area patterns](matching_and_measurement/easymatch/index.html.md) - [**Deep Learning** - inspecting with deep learning](deep_learning/easydeeplearning/index.html.md) - [**EasyClassify** - classifying images](deep_learning/easyclassify/index.html.md) - [**EasySegment** - detecting and segmenting defects](deep_learning/easysegment/index.html.md) - [**EasyLocate** - locating objects and defects](deep_learning/easylocate/index.html.md) [Hardware Support](deep_learning/engines_and_hardware_support_cpu-gpu.html.md) - [**EasyBarCode** - reading bar codes](text_and_code_reading/easybarcode/index.html.md) - [**EasyMatrixCode** - reading matrix codes](text_and_code_reading/easymatrixcode2/index.html.md) - [**EasyQRCode** - reading QR codes](text_and_code_reading/easyqrcode/index.html.md) - [**EasyDeepOCR** - reading texts with deep learning](text_and_code_reading/easydeepocr/index.html.md) - [**EasyOCR** - reading texts](text_and_code_reading/easyocr1.html.md) - [**EasyOCR2** - reading texts (improved)](text_and_code_reading/easyocr2/index.html.md) [**ECodeReader** (unified interface)](text_and_code_reading/ecodereader.html.md) · [List of Supported Codes](text_and_code_reading/list_of_supported_codes.html.md) · [Code Grading](text_and_code_reading/code_grading/index.html.md) · [Comparison of OCR Methods](text_and_code_reading/comparison_of_ocr_methods.html.md) - [**EasySpotDetector** - detecting spots with deep learning](applicative_processing/easyspotdetector.html.md) ## Cross-Library Operations