python-imaging-library

问题 I'm trying to get an Image's pixel RGB with the PIL Image Library. With this code, I ran into the error: for i in range(width): for j in range(height): r,g,b=(image.getpixel((i,j))) #THIS LINE IS REFERENCED IN ERROR MESSAGE print("leds[",j,"] = CRGB(",r, "," ,g, ",", b, ");") #print pixel colorchange to console del image Why do I get this error? To me, this seems really strange. I input 2 images and it works just fine. However when I have white pixels at a certain position in the image, I get

问题 I'm trying to get an Image's pixel RGB with the PIL Image Library. With this code, I ran into the error: for i in range(width): for j in range(height): r,g,b=(image.getpixel((i,j))) #THIS LINE IS REFERENCED IN ERROR MESSAGE print("leds[",j,"] = CRGB(",r, "," ,g, ",", b, ");") #print pixel colorchange to console del image Why do I get this error? To me, this seems really strange. I input 2 images and it works just fine. However when I have white pixels at a certain position in the image, I get

问题 I'm trying to get an Image's pixel RGB with the PIL Image Library. With this code, I ran into the error: for i in range(width): for j in range(height): r,g,b=(image.getpixel((i,j))) #THIS LINE IS REFERENCED IN ERROR MESSAGE print("leds[",j,"] = CRGB(",r, "," ,g, ",", b, ");") #print pixel colorchange to console del image Why do I get this error? To me, this seems really strange. I input 2 images and it works just fine. However when I have white pixels at a certain position in the image, I get

问题 I'm getting Error in draw.rectangle([x1, y1, x2, y2], fill="Black") when drawing rectangle with PIL python library for high dimension png file(770x1024). But it works for medium size images. img = Image.open(BytesIO(file_byte_string)) width, height = img.size . . if(doc.pages): page = doc.pages[0] . . for field in page.form.fields: if(field.key and field.value): . . x1 = field.value.geometry.boundingBox.left*width y1 = field.value.geometry.boundingBox.top*height-2 x2 = x1 + (field.value

问题 Is there a way to load a font with Pillow library directly from url, preferably into Google Colab? I tried something like from PIL import Image, ImageDraw, ImageFont ImageFont.truetype("https://github.com/googlefonts/roboto/blob/master/src/hinted/Roboto-Regular.ttf?raw=true", 15) Yet I get an error of OSError: cannot open resource . I tried with Google Fonts too, but to no avail. 回答1: Try it like this: import requests from io import BytesIO req = requests.get("https://github.com/googlefonts

问题 I've had hard time to read data I received from a USB camera and display it correctly. I succeeded, but I worry that I'm doing something wrong because my solution is hacky. The usb camera I'm using (ui-1640le) returns a byte array that I want to display. I used PIL.Image.frombytes("RGB", (imageWidth, imageHeight), image_bytes) But the image I got was in black and white and repeated itself: Image result I tried using the "L" format. PIL.Image.frombytes("L", (imageWidth, imageHeight), image

问题 I have an Arducam hooked up to an Arduino UNO over SPI. I am having the camera take a photo and send the data back over SPI to my Arduino. I have a python script that is capturing the serial output from the camera (which should be the image data) and saving it to a text file. My python code for saving the data to a text file looks something like this: import serial import time ser = serial.Serial('/dev/cu.usbmodem621', 115200) f = open('data.txt','a') #pause to let everything get warmed up

问题 I have an Arducam hooked up to an Arduino UNO over SPI. I am having the camera take a photo and send the data back over SPI to my Arduino. I have a python script that is capturing the serial output from the camera (which should be the image data) and saving it to a text file. My python code for saving the data to a text file looks something like this: import serial import time ser = serial.Serial('/dev/cu.usbmodem621', 115200) f = open('data.txt','a') #pause to let everything get warmed up

问题 I am trying to save and display 16 bit JPG image. but getting error like image has wrong mode . If Supported, then what will be the mode? 回答1: Check this The mode (this is a string specifying the pixel format used by the image) of an image defines the type and depth of a pixel in the image. The current Python Imaging Library release only supports the following standard modes: 1 (1-bit pixels, black and white, stored with one pixel per byte) L (8-bit pixels, black and white) P (8-bit pixels,

问题 So when I try to use imread on a TIFF-file, it raises this error. The TIFF-file in question is a TIFF I created and modified in another script. I initially created it like this: temp = np.full([max_y, max_x], np.nan) . Then I looped the cells and changed the cell values. Afterwards I used cv2.imwrite to write it to a file. However the original script where I create and modify the TIFF-file also opens it after writing the file so no clue why it opens then, and not in this new script. The only