image-compression

问题 This is one of those "pretty sure we found the answer, but hoping we're wrong" questions. We are looking at a steganography problem and it's not pretty. Situation: We have a series of images. We want to mark them (watermark) so the watermarks survive a series of conditions. The kicker is, we are using a lossfull format, JPG, rather than lossless such as PNG. Our watermarks need to survive screenshotting and, furthermore, need to be invisible to the naked eye. Finally, they need contain at

问题 This is one of those "pretty sure we found the answer, but hoping we're wrong" questions. We are looking at a steganography problem and it's not pretty. Situation: We have a series of images. We want to mark them (watermark) so the watermarks survive a series of conditions. The kicker is, we are using a lossfull format, JPG, rather than lossless such as PNG. Our watermarks need to survive screenshotting and, furthermore, need to be invisible to the naked eye. Finally, they need contain at

问题 This is one of those "pretty sure we found the answer, but hoping we're wrong" questions. We are looking at a steganography problem and it's not pretty. Situation: We have a series of images. We want to mark them (watermark) so the watermarks survive a series of conditions. The kicker is, we are using a lossfull format, JPG, rather than lossless such as PNG. Our watermarks need to survive screenshotting and, furthermore, need to be invisible to the naked eye. Finally, they need contain at

来源： https://stackoverflow.com/questions/52243679/lossless-texture-compression-for-opengl

来源： https://stackoverflow.com/questions/52243679/lossless-texture-compression-for-opengl

来源： https://stackoverflow.com/questions/57699807/webpack-imagemin-plugin-to-compress-jpg-png-and-create-webp

来源： https://stackoverflow.com/questions/62898708/kotlin-image-compression-implementation

问题 I am doing image processing in a scientific context. Whenever I need to save an image to the hard drive, I want to be able to reopen it at a later time and get exactly the data that I had before saving it. I exclusively use the PNG format, having always been under the impression that it is a lossless format. Is this always correct, provided I am not using the wrong bit-depth? Should encoder and decoder play no role at all? Specifically, the images I save are present as 2D numpy arrays have

问题 I am doing image processing in a scientific context. Whenever I need to save an image to the hard drive, I want to be able to reopen it at a later time and get exactly the data that I had before saving it. I exclusively use the PNG format, having always been under the impression that it is a lossless format. Is this always correct, provided I am not using the wrong bit-depth? Should encoder and decoder play no role at all? Specifically, the images I save are present as 2D numpy arrays have

问题 I have been using compress.js for single image upload. But, now i want to use this for multiple image uploads. What i want to achieve is to select multiple image from html input element and then compress it using this library and also preview those compressed images in dynamically generated tag. like this:- <img id="preview0"> <img id="preview1"> <img id="preview2"> ....depending on number of image selected. This is how i was using it for single image upload <input type="file" accept="image/*