Open Source Computer Vision Library https://opencv.org/
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Image Processing (imgproc module)

In this section you will learn about the image processing (manipulation) functions inside OpenCV.

  • @subpage tutorial_gausian_median_blur_bilateral_filter

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Let's take a look at some basic linear filters!

  • @subpage tutorial_erosion_dilatation

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Let's change the shape of objects!

  • @subpage tutorial_opening_closing_hats

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Here we investigate different morphology operators

  • @subpage tutorial_pyramids

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    What if I need a bigger/smaller image?

  • @subpage tutorial_threshold

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    After so much processing, it is time to decide which pixels stay!

  • @subpage tutorial_filter_2d

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn to design our own filters by using OpenCV functions

  • @subpage tutorial_copyMakeBorder

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to pad our images!

  • @subpage tutorial_sobel_derivatives

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to calculate gradients and use them to detect edges!

  • @subpage tutorial_laplace_operator

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn about the Laplace operator and how to detect edges with it.

  • @subpage tutorial_canny_detector

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn a sophisticated alternative to detect edges.

  • @subpage tutorial_hough_lines

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to detect lines

  • @subpage tutorial_hough_circle

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to detect circles

  • @subpage tutorial_remap

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to manipulate pixels locations

  • @subpage tutorial_warp_affine

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to rotate, translate and scale our images

  • @subpage tutorial_histogram_equalization

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to improve the contrast in our images

  • @subpage tutorial_histogram_calculation

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to create and generate histograms

  • @subpage tutorial_histogram_comparison

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn to calculate metrics between histograms

  • @subpage tutorial_back_projection

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to use histograms to find similar objects in images

  • @subpage tutorial_template_matching

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to match templates in an image

  • @subpage tutorial_find_contours

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to find contours of objects in our image

  • @subpage tutorial_hull

*Compatibility:* \> OpenCV 2.0

*Author:* Ana Huamán

Where we learn how to get hull contours and draw them!
  • @subpage tutorial_bounding_rects_circles

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to obtain bounding boxes and circles for our contours.

  • @subpage tutorial_bounding_rotated_ellipses

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to obtain rotated bounding boxes and ellipses for our contours.

  • @subpage tutorial_moments

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn to calculate the moments of an image

  • @subpage tutorial_point_polygon_test

    Compatibility: > OpenCV 2.0

    Author: Ana Huamán

    Where we learn how to calculate distances from the image to contours