官方说法: Thepoint()method can be used to translate the pixel values of an image (e.g. image contrast manipulation). In most cases, a function object expecting one argument can be passed to this method. Each pixel is processed according to that function: 当使用point时,第一个参数可以传递一...
Image.eval(image, function) ⇒ image Applies the function (which should take one argument) to each pixel in the given image. If the image has more than one band, the same function is applied to each band. Note that the function is evaluated once for each possible pixel value, so you ...
Returns the contents of an image as a sequence object containing pixel values. The sequence object is flattened, so that values for line one follow directly after the values of line zero, and so on. Note that the sequence object returned by this method is an internal PIL data type, which ...
下面是获取PIL通道的完整代码,包括上述所有步骤的代码和注释: fromPILimportImage# 导入PIL库fromPILimportImage# 加载图像image=Image.open("image.jpg")# 获取通道channels=image.split()# 输出通道信息fori,channelinenumerate(channels):print(f"Channel{i+1}:{channel}")print(f"Pixel values:{list(channel.g...
also include pixel row 9 but not row 10. 由四元组(x0, y0, x1, y1)定义的一个矩形区域。区域包括左上角(x0,y0),但不包括右下角(x1, y1)或者(x1, y1)所在行列的像素点。 通道Bands– the separate color channels An image band is a set of values, one per image pixel. ...
import Image im=Image.open("d:/lena.jpg")print im.mode #查看图像的模式 im1=im.convert("YCbCr") #转换图像的模式到视频模式 y,cb,cr=im1.getpixel((10,10)) #提取点(10,10)位置的亮度、蓝色分量、红色分量的值。print y #输出亮度值 后面两步循环就可以计算整个图像的亮度...
for each possible pixel value, and the resulting table is applied to all bands of the image....
for each possible pixel value, and the resulting table is applied to all bands of the image....
三、Image类的方法: 1、Convert 2、Copy 3、Crop 4、Draft 5、Filter 6、Fromstring 7、Getbands 8、Getbbox 9、Getcolors 10、Getdata 11、 Getextrema 12、Getpixel 13、Histogram 14、Load 15、Paste PIL基本概念 通道(bands)、模式(mode)、尺寸(size)、坐标系统(coordinate system)、调色板(palette)、信息...
def solarize(self, threshold=128): """ Invert all pixel values above a threshold """ self.convert() actual_value = float(threshold)/100 * 256 self.output = ImageOps.solarize(self.output, int(actual_value)) self.add_effect('solarize') 浏览完整代码 来源:image_edit.py 项目:andela-snwugur...