image

问题 I have the following functions, I am trying to read a string from my MongoDB database which is an image decode it and send it to my Vue frontend to be downloaded. @GetMapping(path = "/signature/{signatureId}", produces = MediaType.IMAGE_PNG_VALUE) public byte[] downloadSignature(String signatureId) { Signature signature = routeRepository.findBySignature(signature); byte[] bytes = Base64.getDecoder().decode(signature.getSignature().getBytes(StandardCharsets.UTF_8)); // This try-catch just

问题 i cannot get my image in the markdown file to render. I am requiring the markdown file in a react component, but the image in the md file is not rendering. absolute paths to online images are working, but relative paths are not. useEffect(() => { fetch(require(`../../../static/markdowns/${category.file}`)).then(r => r.text()).then(text => { setMarkDown(text) }) }, []) <ReactMarkdown escapeHtml={false} source={markDown}/> <img src='https://picsum.photos/200/300'></img> <img src=".

问题 i cannot get my image in the markdown file to render. I am requiring the markdown file in a react component, but the image in the md file is not rendering. absolute paths to online images are working, but relative paths are not. useEffect(() => { fetch(require(`../../../static/markdowns/${category.file}`)).then(r => r.text()).then(text => { setMarkDown(text) }) }, []) <ReactMarkdown escapeHtml={false} source={markDown}/> <img src='https://picsum.photos/200/300'></img> <img src=".

问题 I'd like to find and remove an image in a series of folders. The problem is that the image names are not necessarily the same. What I did was to copy an arbitrary string from the images bytecode and use it like grep -ir 'YA'uu�KU���^H2�Q�W^YSp��.�^H^\^Q��P^T' . But since there are thousands of images this method lasts for ever. Also, some images are created by imagemagic of the original, so can not use size to find them all. So I'm wondering what is the most efficient way to do so? 回答1:

问题 I'd like to find and remove an image in a series of folders. The problem is that the image names are not necessarily the same. What I did was to copy an arbitrary string from the images bytecode and use it like grep -ir 'YA'uu�KU���^H2�Q�W^YSp��.�^H^\^Q��P^T' . But since there are thousands of images this method lasts for ever. Also, some images are created by imagemagic of the original, so can not use size to find them all. So I'm wondering what is the most efficient way to do so? 回答1:

问题 I've tried multiple ways of displaying large images with tkinterreally long image No matter what I've tried, there doesn't seem to be any code that works. The main issue is that Canvas has a maximum height limit of around 30,000 pixels. Is there a way to display this whole image? increase, or get around the canvas limit? See the example image below. 回答1: There is no way around the size limit of the canvas, short of modifying and recompiling the underlying tk code. This would likely not be a

问题 Consider an image img of type imageio.core.util.Array . The shape of img is (256, 256, 3) . I want to resize it to (128, 128, 3) . I tried at least the following three: img.resize(img_res, pilmode="RGB") img.resize(img_res) img = cv2.resize(img, self.img_res) Here img_res = (128, 128) . None of them worked well. How can I resize my image to the desired size? 回答1: According to the documentation on imageio.core.util.Array, Array is "a subclass of np.ndarray [...]". Thus, when calling resize on

问题 I want to simply scroll images that taken from a collection. I have this code: public class RadioStation { private int id; public BitmapImage bitmap; private Uri link; public RadioStation(int id, BitmapImage bitmap, Uri link) { this.id = id; this.bitmap = bitmap; this.link = link; } public int getId() { return this.id; } public Uri getLink() { return this.link; } public BitmapImage getBitmap() { return this.bitmap; } } public class RadioStations : ObservableCollection<RadioStation> { public

问题 Using OpenCV, Whenever I save an image (from a camera stream) as JPG to the disk. The file size in bytes on the disk differs depending on the JPEG quality as expected. However, whenever I read the images regardless of the file size on the disk, the memory size remains constant. Is this normal? Also, there seems to be a massive difference in the disk and memory size of the image. I was expecting a much smaller memory size, somewhat relative to the disk size. For e.g. import sys import cv2 cv2

问题 Using OpenCV, Whenever I save an image (from a camera stream) as JPG to the disk. The file size in bytes on the disk differs depending on the JPEG quality as expected. However, whenever I read the images regardless of the file size on the disk, the memory size remains constant. Is this normal? Also, there seems to be a massive difference in the disk and memory size of the image. I was expecting a much smaller memory size, somewhat relative to the disk size. For e.g. import sys import cv2 cv2