toward fast, flexible, and robust low-light image enhancement

时间: 2023-06-05 19:47:19 浏览: 207
低光图像增强是一项具有挑战性的任务,因为在低光条件下拍摄的图像通常受到噪声、模糊和细节丢失等问题的影响。为了实现快速、灵活、健壮的低光图像增强,需要采用先进的图像处理算法和技术。一些常见的方法包括使用深度学习技术进行图像增强、利用图像复原算法来去除噪声和模糊、通过多帧图像融合来提高图像质量等。此外,对于低光图像增强,还需要考虑到亮度、对比度、饱和度等因素的平衡,以便得到高质量的增强图像。
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toward fast, flexible, and robust low-light image enhancement(cvpr2022)代码

"toward fast, flexible, and robust low-light image enhancement (cvpr2022)"是一种针对低光照图像增强的代码。该代码旨在通过快速、灵活和强大的方法,提高低光照条件下图像的质量。 这个代码的特点之一是它的快速性。它能够快速地处理低光照条件下的图像,使图像质量得到改善。与传统的图像增强方法相比,这个代码能够更有效地提高图像的亮度和对比度。 另一个特点是它的灵活性。这个代码具有灵活的参数设置和多种处理选项,可以根据不同场景和需求对图像进行定制化处理。用户可以根据自己的需求调整参数,以达到最佳的图像增强效果。 此外,这个代码还具有强大的性能。它能够处理各种类型的低光照图像,包括室内和室外环境下的图像,并能够有效地提高图像的质量和清晰度。 总的来说,“toward fast, flexible, and robust low-light image enhancement (cvpr2022)”代码是一种高效的低光照图像增强工具,它的快速、灵活和强大的特性使其成为处理低光照图像的理想选择。无论是在科学研究、工程应用还是日常生活中,这个代码都能够有效地提高低光条件下图像的质量,满足用户的各种需求。

python海龟toward

海龟 (turtle) 的 towards 方法是用来计算当前海龟位置和指定目标位置之间的方向角度的。它使用海龟所在位置作为起点,目标位置作为终点,计算两者之间的直线连线与东方向的夹角。返回的角度值是逆时针方向的,范围是 -180 到 180 度。 在 Python 中,你可以使用 turtle.Turtle 对象的 towards 方法来获取海龟指向目标位置的角度。例如,如果你创建了一个名为 tt 的海龟对象,你可以使用 tt.towards(x, y) 来获取海龟当前位置指向坐标 (x, y) 的角度。其中,x 和 y 是目标位置的坐标值。 请注意,为了使用此方法,你需要导入 turtle 模块,并在创建海龟对象之后进行设置。例如,你可以使用 tt.setheading(angle) 或 tt.seth(angle) 来设置海龟的初始朝向,其中 angle 为角度值,0 表示东方,90 表示北方,180 表示西方,270 表示南方。 另外,如果需要自定义坐标系,你可以使用 tt.setworldcoordinates(llx, lly, urx, ury) 方法来设置左下角和右上角的坐标,以创建自己的坐标系。 希望这个解答能帮到你!如果还有其他问题,请随时提问。

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(1)编GtTt)现算文“testtxt”该文本文件中的内容如下所示: Good now, sit down, and tell me, he that knows. Why this same strict and most observant watch So nightly toils the subject of the land, And why such daily cast of brazen cannon, And foreign mart for implements of war, Why such impress of shipwrights, whose sore task Does not divide the Sunday from the week; 第5部分编程测试题 81 What might be toward, that this sweaty haste Doth make the night joint-labourer with the day: Who is't that can inform me? (2)将读取的文本进行分词后放入列表lw中(注意处理大小写和除标点符)并按厅16个单词的格式输出结果,如图 5-2 所示。 调信的结果为: sod nou sit domm and tell me he that knows why this sime strict and mast lstrvant watch so nightlz toils the subiect of the land and sto maoh aily caat of nzen cannen and foreign micrt for implements of war why ruch iwprest of shipnrigits whecs shr it does not divide the sunday from the weok what might be torand that this iweety doth make the nlght oint-lab urer viih the day wno itt that ca inlers me 图5-2输出结果1 (3)根据列表lw的内容生成字典dic(键为单词,值为单词个数)。 (4)根据字典dic,分别输出单词of、and、such、why的个数,按图 5-3所示的格式输出结果。 列表 海结更为: 买,有4个 and有4个 auch有2个 he有3个 图5-3输出结果2 (5)将写程文件名“zhpy”保存算M盘根目录。 请写出代码并说明代码的意思

import numpy as np import numpy.fft as fft import scipy.ndimage as nd import imageio import scipy.misc as misc from math import pi #Read in source image #source = nd.imread("einstein.bmp", flatten=True) source = imageio.imread("einstein.bmp", as_gray=True) #Pad image to simulate oversampling pad_len = len(source) padded = np.pad(source, ((pad_len, pad_len),(pad_len, pad_len)), 'constant', constant_values=((0,0),(0,0))) ft = fft.fft2(padded) #simulate diffraction pattern diffract = np.abs(ft) l = len(padded) #keep track of where the image is vs the padding mask = np.ones((pad_len+2,pad_len+2)) mask = np.pad(mask, ((pad_len-1, pad_len-1),(pad_len-1, pad_len-1)), 'constant', constant_values=((0,0),(0,0))) #Initial guess using random phase info guess = diffract * np.exp(1j * np.random.rand(l,l) * 2 * pi) #number of iterations r = 801 #step size parameter beta = 0.8 #previous result prev = None for s in range(0,r): #apply fourier domain constraints update = diffract * np.exp(1j * np.angle(guess)) inv = fft.ifft2(update) inv = np.real(inv) if prev is None: prev = inv #apply real-space constraints temp = inv for i in range(0,l): for j in range(0,l): #image region must be positive if inv[i,j] < 0 and mask[i,j] == 1: inv[i,j] = prev[i,j] - beta*inv[i,j] #push support region intensity toward zero if mask[i,j] == 0: inv[i,j] = prev[i,j] - beta*inv[i,j] prev = temp guess = fft.fft2(inv) #save an image of the progress if s % 10 == 0: #imageio.imsave("/Users/chasegoddard/Stuff/CDI/code/save/progress" + str(s) + # ".bmp", prev) imageio.imsave("C:/Users/Administrator/Desktop/仿真结果/结果" + str(s) + ".bmp", prev) print(s)

Based on the following story, continue the story by writing two paragraphs, paragraph 1 beginning with "A few weeks later, I went to the farm again. " and paragraph 2 beginning with "I was just about to leave when the hummingbird appeared."respectively with 150 words. I was invited to a cookout on an old friend's farm in western Washington. I parked my car outside the farm and walked past a milking house which had apparently not been used in many years.A noise at a window caught my attention,so I entered it. It was a hummingbird,desperately trying to escape. She was covered in spider-webs and was barely able to move her wings. She ceased her struggle the instant I picked her up. With the bird in my cupped hand, I looked around to see how she had gotten in. The broken window glass was the likely answer. I stuffed a piece of cloth into the hole and took her outside,closing the door securely behind me. When I opened my hand, the bird did not fly away; she sat looking at me with her bright eyes.I removed the sticky spider-webs that covered her head and wings. Still, she made no attempt to fly.Perhaps she had been struggling against the window too long and was too tired? Or too thirsty? As I carried her up the blackberry-lined path toward my car where I kept a water bottle, she began to move. I stopped, and she soon took wing but did not immediately fly away. Hovering,she approached within six inches of my face. For a very long moment,this tiny creature looked into my eyes, turning her head from side to side. Then she flew quickly out of sight. During the cookout, I told my hosts about the hummingbird incident. They promised to fix the window. As I was departing, my friends walked me to my car. I was standing by the car when a hummingbird flew to the center of our group and began hovering. She turned from person to person until she came to me. She again looked directly into my eyes, then let out a squeaking call and was gone. For a moment, all were speechless. Then someone said, “She must have come to say good-bye.”

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