(Python) Insert multiple elements into a list at different positions Question: I’m a student, I am working on a personal project which deals with images. basically, I’m trying to make my own image scrambler, first I convert an image into 1D array of rgb values of image. then I send this list into this function …
AttributeError: EagerTensor object has no attribute 'astype' Question: I am trying to do a GradCAM Heatmap in Google Colab like so: import tensorflow as tf from tensorflow.keras import backend as K from tf_keras_vis.activation_maximization import ActivationMaximization from tf_keras_vis.utils.callbacks import Print def model_modifier(m): m.layers[-1].activation = tf.keras.activations.linear activation_maximization = ActivationMaximization(model, model_modifier) loss = lambda x: K.mean(x[:, 1]) activation …
Trim image thigh Using python with jupyter notebook Question: Hey everyone I try to trim an image thigh, I tried many functions but no one gives the good results that I need. input: png image like this output: png image trimmed I have many images like these and I want to trim thight I can. …
Why do image size differ when vertical vs horizontal? Question: Tried to create a random image with PIL as per the example: import numpy from PIL import image a = numpy.random.rand(48,84) img = Image.fromarray(a.astype(‘uint8’)).convert(‘1’) print(len(img.tobytes())) This particular code will output 528. Wen we flip the numbers of the numpy array: a = numpy.random.rand(84,48) The output …
How to make binary mask of large .tif file fast using .shp file with polygons (GPS coordinates)? Question: I have a large .tif file (~24 Gb, more, than RAM could store) (Similar question: https://rasterio.readthedocs.io/en/latest/topics/masking-by-shapefile.html) (Method from library: https://rasterio.readthedocs.io/en/latest/topics/masking-by-shapefile.html) But I’m searching another faster solution. Maybe I should create numpy array with zeros and add polygon …
How can I remove small pixel clusters from a transparent png using python Question: I am trying to remove random pixel clusters noise from a transparent png using python. I have used eroding and then dilating like this import cv2 import numpy as np img = cv2.imread(‘test1.png’) blurred_img = cv2.medianBlur(img, 1) kernel = np.ones((2,2),np.uint8) erosion …
Animate labels using FuncAnimation in Matplotlib Question: I am not able to make (animated) labels using FuncAnimation from matplotlib. Please find below a minimal code that I made. ax.annotate has no effect at all – the animation itself works though. What can I change to get animated labels/titles, which are different for each frame? import …
How would I read a raw RGBA4444 image using Pillow? Question: I’m trying to read a ‘.waltex’ image, which is a ‘walaber image’. It’s basically just in raw image format. The problem is, it uses ‘RGBA8888’, ‘RGBA4444’, ‘RGB565’ and ‘RGB5551’ (all of which can be determined from the header), and I could not find a …
How to convert raw bytes in Hexadecimal from to RGB image Question: I am trying to get my hands dirty by exploring the act of detecting malware using machine learning. So I stumbled across a Microsoft Big 2015 dataset on Kaggle. The dataset contains bytes data in hexadecimal form. i.e 00401000 00 00 80 40 …
Alternate faster method for RGB to self-defined color-space image conversion in real-time in Python Question: Question: I have defined my own colorspace (Yellow-Blue) using some loops, and want to convert a standard HD image from RGB to YB in real-time, with some post-processing filters, but the method I wrote performs the favorable task at a …
