jpeg

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

问题 I am not sure what I am exactly doing here so please give some advise and forgive the mistakes. I have a image byte[] called idCardImage and I did the following to convert it to a String: String s = new String(idCardImage); And it prints out like this: data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAEHUlEQVQ4TzWUW49VRRCFv6rq3ufMmTNn.... Did some search online and it seems this image is in a png format with base 64 encoded. What I need to do is to convert it to a jpeg

问题 I am currently trying to shoot photos within an app with the UIImagePickerController, saving it to the local database and upload them later to a service. But it seems that the metadata (especially EXIF) are not bundled with this image automatically. I've tried to extract it like this: func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { self.imageDelegate?.saveImage( image: info[UIImagePickerControllerOriginalImage] as! UIImage,

问题 I am currently trying to shoot photos within an app with the UIImagePickerController, saving it to the local database and upload them later to a service. But it seems that the metadata (especially EXIF) are not bundled with this image automatically. I've tried to extract it like this: func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { self.imageDelegate?.saveImage( image: info[UIImagePickerControllerOriginalImage] as! UIImage,

问题 Is there any way to write API which will convert normal image into Progressive Using Nodejs. I don't want to use Base64. I have done so much R & D on this. One library i found i.e lib turbo-jpeg But in this only they are decoding the image .I want to encode that image too. Please check this below link for reference. If anyone got any solution then please let me know. Link is - https://github.com/LinusU/cwasm-jpeg-turbo Please help me out to write API to convert image into progreesive. Thank

问题 Is there any way to write API which will convert normal image into Progressive Using Nodejs. I don't want to use Base64. I have done so much R & D on this. One library i found i.e lib turbo-jpeg But in this only they are decoding the image .I want to encode that image too. Please check this below link for reference. If anyone got any solution then please let me know. Link is - https://github.com/LinusU/cwasm-jpeg-turbo Please help me out to write API to convert image into progreesive. Thank

问题 I'm trying to build a sample Android App to extract the depth map of portrait mode photos taken with the google camera app. I know that it's saved along the blurred photos. I read the Dynamic Depth Format documentation coming from Google : https://developer.android.com/training/camera2/Dynamic-depth-v1.0.pdf It's pretty new and I don't find any resource related to this subject or how to manage the extraction of an android portrait's depth map. I used metadata-extractor library to read file's

问题 I'm trying to build a sample Android App to extract the depth map of portrait mode photos taken with the google camera app. I know that it's saved along the blurred photos. I read the Dynamic Depth Format documentation coming from Google : https://developer.android.com/training/camera2/Dynamic-depth-v1.0.pdf It's pretty new and I don't find any resource related to this subject or how to manage the extraction of an android portrait's depth map. I used metadata-extractor library to read file's