其中,f(x,y)为原始图像,g(x,y)为锐化后图像,c为-1(卷积核中间为负数时,若卷积核中间为正数,则c为1)。 四. 通过laplacian滤波器实现图像锐化 python源码 import cv2 import numpy as np # Image sharpening by laplacian filter def laplacian_sharpening(img, K_size=3): H, W = img.shape # zero ...
四. 通过laplacian滤波器实现图像锐化 python源码 importcv2importnumpy as np#Image sharpening by laplacian filterdeflaplacian_sharpening(img, K_size=3): H, W=img.shape#zero paddingpad= K_size // 2out= np.zeros((H + pad * 2, W + pad * 2), dtype=np.float) out[pad: pad+ H, pad: ...
which is a second-order derivative operator that highlights rapid intensity changes in an image. In this article, we will explore how to implement a Laplacian filter in Python using the OpenCV library.
Code: // Define the Laplacian filter kernel reg [31:0] kernel [0:2][0:2]; initial begin kernel[0][0] = 0; kernel[0][1] = 1; kernel[0][2] = 0; kernel[1][0] = 1; kernel[1][1] = -4; kernel[1][2] = 1; kernel[2][0] = 0; kernel[2][1] = 1; kernel[2][...
Source File: cartoonizing.py From Mastering-OpenCV-4-with-Python with MIT License 6 votes def sketch_image(img): """Sketches the image applying a laplacian operator to detect the edges""" # Convert to gray scale img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) # Apply median filter ...
(Csync, width=3, mode='affinity', sym=True) # Enhance diagonals with a median filter (Equation 2) df = librosa.segment.timelag_filter(scipy.ndimage.median_filter) Rf = df(R, size=(1, 7)) ### # Now let's build the sequence matrix (S_loc) using mfcc-similarity # # :math:`R_...
About image sharpening, laplacian filter, gradient filter Resources Readme Activity Stars 3 stars Watchers 1 watching Forks 1 fork Report repository Releases No releases published Packages No packages published Languages Python 100.0% ...
color demosaicing; color interpolation; Laplacian pyramid; RGBW color filter array (CFA); white-dominant RGBW1. Introduction Most image acquisition devices use a color filter array (CFA) to acquire color images. Color filter array is structured to obtain color information from a single sensor, ...
In recent years, red, green, blue, and white (RGBW) color filter arrays (CFAs) have been developed to solve the problem of low-light conditions. In this paper, we propose a new color demosaicing algorithm for RGBW CFAs using a Laplacian pyramid. Because