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Image Processing (imgproc module) {#tutorial_table_of_content_imgproc}
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In this section you will learn about the image processing (manipulation) functions inside OpenCV.
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- @subpage tutorial_gausian_median_blur_bilateral_filter
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*Languages:* C++, Java, Python
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Let's take a look at some basic linear filters!
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- @subpage tutorial_erosion_dilatation
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*Compatibility:* \> OpenCV 2.0
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Author: Ana Huamán
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Let's *change* the shape of objects!
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- @subpage tutorial_opening_closing_hats
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Here we investigate different morphology operators
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- @subpage tutorial_hitOrMiss
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*Languages:* C++, Java, Python
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*Compatibility:* \> OpenCV 2.4
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*Author:* Lorena García
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Learn how to find patterns in binary images using the Hit-or-Miss operation
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- @subpage tutorial_moprh_lines_detection
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*Compatibility:* \> OpenCV 2.0
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*Author:* Theodore Tsesmelis
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Here we will show how we can use different morphological operators to extract horizontal and vertical lines
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- @subpage tutorial_pyramids
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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What if I need a bigger/smaller image?
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- @subpage tutorial_threshold
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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After so much processing, it is time to decide which pixels stay
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- @subpage tutorial_threshold_inRange
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*Compatibility:* \> OpenCV 2.0
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*Author:* Rishiraj Surti
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Thresholding operations using inRange function.
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- @subpage tutorial_filter_2d
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn to design our own filters by using OpenCV functions
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- @subpage tutorial_copyMakeBorder
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to pad our images
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- @subpage tutorial_sobel_derivatives
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to calculate gradients and use them to detect edges
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- @subpage tutorial_laplace_operator
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn about the *Laplace* operator and how to detect edges with it
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- @subpage tutorial_canny_detector
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn a sophisticated alternative to detect edges
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- @subpage tutorial_hough_lines
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to detect lines
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- @subpage tutorial_hough_circle
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to detect circles
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- @subpage tutorial_remap
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to manipulate pixels locations
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- @subpage tutorial_warp_affine
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to rotate, translate and scale our images
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- @subpage tutorial_histogram_equalization
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to improve the contrast in our images
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- @subpage tutorial_histogram_calculation
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to create and generate histograms
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- @subpage tutorial_histogram_comparison
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn to calculate metrics between histograms
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- @subpage tutorial_back_projection
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to use histograms to find similar objects in images
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- @subpage tutorial_template_matching
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*Languages:* C++, Java, Python
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to match templates in an image
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- @subpage tutorial_find_contours
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to find contours of objects in our image
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- @subpage tutorial_hull
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to get hull contours and draw them
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- @subpage tutorial_bounding_rects_circles
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to obtain bounding boxes and circles for our contours
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- @subpage tutorial_bounding_rotated_ellipses
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to obtain rotated bounding boxes and ellipses for our contours
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- @subpage tutorial_moments
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn to calculate the moments of an image
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- @subpage tutorial_point_polygon_test
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*Compatibility:* \> OpenCV 2.0
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*Author:* Ana Huamán
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Where we learn how to calculate distances from the image to contours
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- @subpage tutorial_distance_transform
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*Compatibility:* \> OpenCV 2.0
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*Author:* Theodore Tsesmelis
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Where we learn to segment objects using Laplacian filtering, the Distance Transformation and the Watershed algorithm.
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