Category "numpy"

How to check object image color and paste on same background color?

I'm trying to generate augmented image data by pasting objects on different background. Problem is I've objects of different colors and background and the objec

How to create numpy array for a dataset?

I've a dataset of almost 3k colored images each of dim 1920x1080 and I want to store it in a numpy array so when calling shape on it in returns (3716,493,491,3)

Addressing polynomial multiplication and division "overflow" issue

I have a list of the coefficient to degree 1 polynomials, with a[i][0]*x^1 + a[i][1] a = np.array([[ 1. , 77.48514702], [ 1. , 0.

TF-Agents _action_spec: how to define the correct shape for discrete action space?

Scenario 1 My custom environment has the following _action_spec: self._action_spec = array_spec.BoundedArraySpec( shape=(highestIndex+1,), dtype=np.

How can I use Gaussian Mixture to fit 2 gaussians in my data?

I'm trying to fit 2 gaussians in my red/blue population data. But it does not fit. What am I doing wrong? The code is: mag1 = 'z' mag2 = 'y' mask_rich = (wazp_m

Simulating expectation of continuous random variable

Currently I want to generate some samples to get expectation & variance of it. Given the probability density function: f(x) = {2x, 0 <= x <= 1; 0 othe

How to color a grayscale image based on a mask?

I have two images: A grayscale image, and a binary mask with the same dimensions. How do I color the image on the mask, while the rest of the image remains gray

curve fitting error for optimal parameters while using scipy optimize curvefit in python

I am getting optimization errors while creating map of h3 moments using a self-defined function get_h3 in python for an image file called "image_test". The idea

How to make the dataframe faster ? either by using dictionary or numpy?

I am new to data structures and I would like to make my code faster (this is just part of a bigger code). Using dataframes while looking up variables is slowing

Calculating joint probabilities from two tensors of different sizes in pytorch

I am trying to calculate joint probabilities from two tensors.. It's a little bit confusing for me. Suppose we have : a = torch.Tensor((10, 2)) b = torch.Tensor

How to solve the problem with installing google colab?

Tried to solve a simple problem from google.colab import files import numpy as np file = files.upload() !ls my_array = np.loadtxt('train_vector.csv', delimi

Saving Detected Objects Individually from Point Cloud with RANSAC and DBSCAN

Hello, I am trying to detect objects from point cloud data using RANSAC and DBSCAN algorithms. I need to save these detected objects as separate files and then

tf.data pipeline from large numpy arrays for a multiple input, multiple output Keras model and distributed training

This question relates to the optimal setup for a multiple-input multiple-output Keras (Tensorflow) model given corresponding numpy arrays. For example, suppose

Generating list of hexagonal coordinates

I am gonna try to frame this in an understandable way but please let me know if further clarification is necessary. I am trying to create a list of hexagonal co

NRRD File of brain tumor is not being read into python with pynrrd module

I have nrrd files of the brain tumor. When reading the file into an array with a header and passing the code print(filename), I get an array of zeros. I checked

Handwriting detection with keras : using a `tf.Tensor` as a Python `bool` is not allowed in Graph execution

I've tried to run a code example (hosted on keras.io) regarding the handwriting recognition task. While playing with the code, I faced a TensorFlow-related issu

How to understand inaccurate results while using numpy.log?

I wish to calculate the natural logarithm of a value that is very close to 1, but not exactly one. For example, np.log(1 + 1e-22) is 0 and not some non-zero val

IndexError: too many indices for array: array is 0-dimensional, but 2 were indexed

I want to bring in a text file through PyQt5 and draw a graph with data values. import sys from PyQt5.QtWidgets import QApplication, QMainWindow, QTextEdit, QAc

How can fit a keras model with a dataframe of numpy arrays?

I want to train a model with self-generated matrices (word vectors). My data have the following datatypes: print(type(X)) print(type(X[0])) print(type(X[0][0]))

Finding a specific shape position in the Image

I want to Finding a specific shape position in the Image. Firstly, I have a main image like below and I have multiple icons like below. I want to find the posit