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myFFT.py
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# my FFT | |
from scene import * | |
from math import sqrt, sin, pi, floor | |
import Image, ImageDraw | |
#import Image | |
import ImageOps, ImageFilter | |
import numpy as np | |
class fftScene (Scene): | |
def setup(self): | |
self.setupData0() | |
self.updateData1( self.pilImg0 ) | |
self.showTouch = False | |
def setupAllData(self): | |
# image size | |
s = 512 | |
self.img_size = s | |
# now prepare image | |
img_name = 'Test_Lenna' | |
img = Image.open(img_name) | |
img = img.resize((s, s), Image.BILINEAR) | |
img = ImageOps.grayscale(img) | |
# gray image for pil and RGBA image for scene | |
self.pilImg0 = img | |
def setupData0(self): | |
# image size | |
s = 512 | |
self.img_size = s | |
# now prepare image | |
img_name = 'Test_Lenna' | |
img = Image.open(img_name) | |
img = img.resize((s, s), Image.BILINEAR) | |
img = ImageOps.grayscale(img) | |
# gray image for pil and RGBA image for scene | |
self.pilImg0 = img | |
self.sceneImg0 = load_pil_image(img.convert('RGBA')) | |
def updateData1(self, pilImg): | |
# updates the FFT image from data | |
pix = np.array(pilImg) | |
imgFFT = np.fft.fft2(pix) | |
imgFFT = np.fft.fftshift(imgFFT) | |
imgFFT = np.abs(imgFFT) | |
imgFFT = np.log10(imgFFT + 1) | |
maxi = np.max(imgFFT) | |
mini = np.min(imgFFT) | |
imgFFT = (imgFFT-mini) / (maxi-mini) * 255 | |
self.pilImg1 = Image.fromarray(imgFFT) | |
self.sceneImg1= load_pil_image(self.pilImg1.convert('RGBA')) | |
def draw(self): | |
background(0, 0, 0) | |
# tx = self.size.w/2 - self.img_size/2 | |
tx = self.img_size | |
ty = self.size.h/2 - self.img_size/2 | |
image(self.sceneImg0, 0, ty) | |
image(self.sceneImg1, tx, ty) | |
if self.showTouch : | |
fill(1,1,1) | |
w = 20 | |
# ellipse(self.tpos.x-w/2, self.tpos.y-w/2, w, w) | |
self.drawCircle(self.tpos.x-tx, self.img_size - (self.tpos.y-ty), w) | |
def drawCircle(self,x,y,w): | |
bbox = (x - w/2, y - w/2, x + w/2, y + w/2) | |
draw = ImageDraw.Draw(self.pilImg1) | |
draw.ellipse(bbox, fill=0) | |
del draw | |
unload_image(self.sceneImg1) | |
self.sceneImg1= load_pil_image(self.pilImg1.convert('RGBA')) | |
def touch_began(self, touch): | |
self.tpos = touch.location | |
self.showTouch = True | |
def touch_moved(self, touch): | |
self.tpos = touch.location | |
def touch_ended(self, touch): | |
self.tpos = touch.location | |
self.showTouch = False | |
if __name__ == "__main__": | |
run(fftScene(), frame_interval=1) |
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