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问题 I need to create a psd file to merge several images into a single layered one. I saw that the gimp command line seems to be the only way to be able to do, but I would like to make this tool-independent. Would there be another solution ? For info I already looked into psd-tools , psdparse , pypsd that allows extracting layers from a psd to make a separate image with it but not the other way around. o/ 回答1: I had looked into that issue myself some time ago for a client who was adamant on

问题 I am trying to segment the blood vessels in retinal images using Python and OpenCV. Here is the original image: Ideally I want all the blood vessels to be very visible like this (different image): Here is what I have tried so far. I took the green color channel of the image. img = cv2.imread('images/HealthyEyeFundus.jpg') b,g,r = cv2.split(img) Then I tried to create a matched filter by following this article and this is what the output image is: Then I tried doing max entropy thresholding:

问题 I am trying to segment the blood vessels in retinal images using Python and OpenCV. Here is the original image: Ideally I want all the blood vessels to be very visible like this (different image): Here is what I have tried so far. I took the green color channel of the image. img = cv2.imread('images/HealthyEyeFundus.jpg') b,g,r = cv2.split(img) Then I tried to create a matched filter by following this article and this is what the output image is: Then I tried doing max entropy thresholding:

问题 a few days ago i was able to fetch inta profile pic in my android app by remove vp/ from the pic URL and change the resolution from s150x150 to s720x720 for exp ,and it worked fine but now i still get " invalid url signature " , so i think instagram has added signature to their url ,I usually remove the parte from vp/ to /t51 in the pic URL... like this https://scontent-mxp1-1.cdninstagram.com/ vp/xxxxxxxx /t51....jpg but it doesn't work !! I don't know what's happened with instagram,so can

问题 a few days ago i was able to fetch inta profile pic in my android app by remove vp/ from the pic URL and change the resolution from s150x150 to s720x720 for exp ,and it worked fine but now i still get " invalid url signature " , so i think instagram has added signature to their url ,I usually remove the parte from vp/ to /t51 in the pic URL... like this https://scontent-mxp1-1.cdninstagram.com/ vp/xxxxxxxx /t51....jpg but it doesn't work !! I don't know what's happened with instagram,so can

问题 In my app you it takes a picture saves it to the SD card then user gets to chose what to do with it. Delete, save, or send. If you press delete. I call File.delete() it deletes the files when I go look in the gallery and then when I sometimes go back later I see a black image saying file cannot load. That image is the one I attempted to delete earlier. What is wrong with this and why doesn't it completely go away? How I save the image: public static File getOutputMediaFile(byte[] data){ image

问题 I would like to fade the color of a pixel out toward white, but obviously maintain the same color. If I have a pixel (200,120,40) , will adding 10 to each value to make (210,130,50) make it the same color, just lighter, or will it change the color entirely? For example, I know that (100,100,100) going to (110,110,110) is a greyscale fade. I would like the same with RGB values and I would like to do it numerically, as indicated. Is there an equation to do so? 回答1: There are a bunch of ways to

问题 I would like to fade the color of a pixel out toward white, but obviously maintain the same color. If I have a pixel (200,120,40) , will adding 10 to each value to make (210,130,50) make it the same color, just lighter, or will it change the color entirely? For example, I know that (100,100,100) going to (110,110,110) is a greyscale fade. I would like the same with RGB values and I would like to do it numerically, as indicated. Is there an equation to do so? 回答1: There are a bunch of ways to

问题 I need help to add some line of code to check is file is image, to check extension. This is my code that I use for indicate progress of uploading images. I do that in php and user can't upload any file except .jpg .jpeg .gif and .png but he doesn't get a message that file isn't uploaded. When I add javascript code for progress upload, my php message taht i create doesn't display anymore. This is my javascript upload.js file code: var handleUpload = function(event) { event.preventDefault();

问题 Using Carrierwave, I created 3 versions of an avatar - an original, a small_thumb and a large_thumb using the following lines: process :resize_to_limit => [400, 400] version :big_thumb do process :resize_to_limit => [80, 80] end version :small_thumb do process :resize_to_limit => [50, 50] end I added an additional method in my AvatarUploader class: def reprocess(x,y,w,h) manipulate! do |img| img.crop(x.to_i, y.to_i, w.to_i, h.to_i, true) end resize_to_limit(180,180) end which is called in my