Introduction

I created an account to get started with Kaggle and tried to set up my profile. I wanted to unify it with the Twitter and Qiita icons, and when I tried to upload the usual image ... In the center is the text ** Upload Image (min. 400x400) **

The size of the image I always used for the icon is (240x420), so of course reject! It was just a single color image, but it was a delicate size because it was an image that I searched for my favorite color and picked it up appropriately.

Alright, let's write a program to generate a single color image.

Color selection

I chose the color by referring to the primary color dictionary of here. As an example, if you click on lightcyan, which is the color of your icon You will be taken to a page with various numerical data about the color. This time, we will use rgb (224,255,255) because we will generate the image in rgb color space.

Creating a solid color image

I made a function that returns an array of monochromatic images with color and image size as arguments.

`create_monochromatic_img`


def create_monochromatic_img(color, size):
    r = color[0] * np.ones((size[1], size[0], 1), dtype=np.uint8)
    g = color[1] * np.ones((size[1], size[0], 1), dtype=np.uint8)
    b = color[2] * np.ones((size[1], size[0], 1), dtype=np.uint8)
    return np.concatenate([r, g, b], axis=2)

Color is lightcyan, when you want to create an image of size 400x400

`main`


#python3.6.7
#import numpy as np
#import cv2
color = [224, 255, 255] #[r,g,b]
size = [400,400] #[height,width]
img = create_monochromatic_img(color, size)
img = cv2.cvtColor(img, cv2.COLOR_RGB2BGR)
cv2.imwrite('out.png', img)

Do as above.

Output image

Good color ~

Summary

numpy array convenient! (Nth time)

Generating solid color images with python ｜ Kaggle icon