[Solved] How can I detect the dimensions of an object under an angle in this picture in MATLAB? [closed]

Consider this as a beginner’s tutorial to Matlab image processing. Read the documentation of the commands used and try and understand what they are doing and why. 1. Read the image Use imread to read the image into a 3D matrix. For convenience, we convert it to double in the range [0..1] using im2double: >> … Read more

[Solved] How can I detect the dimensions of an object under an angle in this picture in MATLAB? [closed]

Introduction This question is about how to detect the dimensions of an object under an angle in a picture using MATLAB. MATLAB is a powerful tool for image processing and can be used to detect the dimensions of an object in a picture. In this article, we will discuss how to use MATLAB to detect … Read more

[Solved] How to get an image of each letter from image with text [closed]

As a basic technique, use binarization and connected component analysis. This will give you “blobs” corresponding to the individual characters and you can get their bounding boxes. You will face extra difficulties: some characters can touch and form a single blob. You will need some detection logics to split them, for instance based on size … Read more

[Solved] What is the best way of learning Digital Image processing? [closed]

The only problem with MATLAB, for a beginner, is that it is really expensive. Some universities buy it without the Image Processing Toolbox, in which case it is not so useful. Octave is well supported by the open source community, that is another alternative “Processing” is a language that is easy to learn and powerful. … Read more

[Solved] Pyramidal Histogram Of Oriented Gradients – Trilinear interpolation

Short answer is: you can’t apply Trilinear Inerpolation. Let’s start with 2x2x2 blocks. Each block, is represented by it’s centre pixel ( 1,2,3,4 in ugly yellow on my sketch). Each pixel is located at the corner of a cell. A pixel (the red dot), will be shared by up to 4 blocks that overlap. With … Read more

[Solved] face detection with svm and feature extraction using matlab [closed]

For starters, try detecting faces using vision.CascadeObjectDetector in the Computer Vision System Toolbox. If you have to roll your own, then take a look at this example, showing how to train a classifier to recognize digits using HOG features and SVM. Note, that the classifier is only one part of the process. You would need … Read more

[Solved] How can I apply a ring-shaped median filter to an image in matlab? [closed]

you can use ordfilt2 . For example, if your “ring” is just defined by: ring= fspecial(‘gaussian’,21,1) ring = ring>eps & ring<1e-9 then: order=sum(ring(:))/2; B = ordfilt2(A,order,ring); replaces each element in A by the order-th element in the sorted set of neighbors specified by the nonzero elements in the ring domain. Here I chose ‘order’ to … Read more

[Solved] OCR – How to recognize numbers inside square boxes using python?

the code below for me is doing decent job but it’s hyper parameter sensitive : import cv2 import imutils import numpy as np import matplotlib.pyplot as plt from matplotlib import pyplot as plt def square_number_box_denoiser(image_path=”/content/9.png”,is_resize = False, resize_width = 768): ”’ ref : https://pretagteam.com/question/removing-horizontal-lines-in-image-opencv-python-matplotlib Args : image_path (str) : path of the image containing numbers/digits … Read more

[Solved] please guide me to split the image

You can use mat2cell to split the image into as many splits as you want: img = imread(‘https://i.stack.imgur.com/s4wAt.png’); [h w c] = size(img); numSplits = 3; % how many splits you want sw = floor(w/numSplits); % width of split widths = repmat(sw, 1, numSplits-1); widths(numSplits) = w – sum(widths); % last one is bit wider … Read more