Controlnet openpose automatic1111. 45 GB large and can be found here.

Fantastic New ControlNet OpenPose Editor Extension & Image Mixing - Stable Diffusion Web UI Tutorial. When i try to use openpose i got preview error, and cant use it. Input your desired parameters or design elements. Meaning they occupy the same x and y pixels in their respective image. Click Install from URL tab, copy and paste the below URL to "URL for extension's git Civitai pone a nuestra disposición cientos de poses para usar con ControlNet y el modelo openpose. Controlnet - v1. ) Automatic1111 Web UI - PC - Free Mar 10, 2024 · 2. Config file: control_v11p_sd15_lineart. thibaud/controlnet-openpose-sdxl-1. " It does nothing. Only Canny,Lineart,shuffle,work for me. 🔗Lien:https:/ Controlnet works for SDXL, are you using an SDXL-based checkpoint? I don't see anything that suggests it isn't working; the anime girl is generally similar to the Openpose reference; keep in mind OpenPose isn't going to work precisely 100% of the time, and all SDXL controlnet models are weaker than SD1. • 1 yr. 5 participants. 今までは元画像を用意するために RunDiffusion Photo - Crystal. Activate ControlNet by clicking on “Enable”. ControlNetはキャラクターのポーズ等をきっちり指定できて便利なので活用なさっている方も多いかと思います。. reference_onlyを使えば、以下のように首から上を固定したまま様々な画像を生成できるとても革新的なモデルです。 Feb 25, 2023 · You signed in with another tab or window. 5. Retried with a fresh install of Automatic1111, with Python 3. Size of remote file: 1. Consult the ControlNet GitHub page for a full list. Aug 25, 2023 · 次はこのOpenPoseの導入方法と使い方について見ていきましょう。 OpenPoseの導入方法. Effectively this is the second version of RunDifusion Photo. Raw pointer file. 0. Input the prompt to generate images. 棒人間を使ったOpenpose機能; 手の奥行き情報を使った You will need this Plugin: https://github. You just experienced a small sample of what ControlNet can do. controlnetは、stable-diffusion-webui上で、拡張機能として動かせます。. 1 Lineart. First you need the Automatic1111 ControlNet extension: Mikubill/sd-webui-controlnet: WebUI extension for ControlNet (github. (2) Select the ControlType to OpenPose. Introudction - AUTOMATIC1111 extensions ControlNet Openpose . This Controlnet Stable Diffusion tutorial will show you how to use OpenPose. Navigate to the Extensions tab in Automatic1111. I tried git clone in extension folder, still no success. Apr 4, 2023 · ControlNet is a new way of conditioning input images and prompts for image generation. 1. Start Stable-Diffusion. Jul 22, 2023 · ControlNet Openpose. 1 brings fantastic new models. 3. 1 además de hacer un tutorial de controlnet 1. 6, but the installation failed showing some errors. Easiest Way to Install & Run Stable Diffusion Web UI on PC by Using Open Source Automatic Installer. This Site. Here is a full guide on how to install th Feb 20, 2023 · Dans cette vidéo je vous montre une extension pour automatic1111 qui permet de de créer vous même les poses de vos personnages pour ControlNet. SDXLでControlNetを使う方法まとめ. 0 and was released in lllyasviel/ControlNet-v1-1 by Lvmin Zhang. This is the official release of ControlNet 1. crop your mannequin image to the same w and h as your edited image. It can be used in combination with Stable Diffusion, such as runwayml/stable-diffusion-v1-5. ここからはStable Diffusion WebUI（AUTOMATIC1111）での操作方法を解説します。 まず、以下の流れでOpenPoseを導入していきます。 Oct 17, 2023 · How to Use ControlNet OpenPose. To simplify this process, I have provided a basic Blender template that sends depth and segmentation maps to ControlNet. Dec 24, 2023 · AUTOMATIC1111 WebUI must be version 1. Stable Diffusion 1. In this segment, we’ll cover using lineart and OpenPose images as ControlNet input. Here is a brief tutorial on how to modify to suit @toyxyz3's rig if you wish to send openpose/depth/canny maps. Automatic1111 Web UI Feb 23, 2023 · 2月10日に、人物のポーズを指定してAIイラストの生成ができるControlNetの論文が発表され、すぐにStable Diffusion用のモデルがGitHubで公開されて、ネットで話題になっています。 今回、このControlNetをWebUIに導入して使用する方法を紹介します。 (2023/03/09追記）WD 1. Edit: already removed --medram, the issue is still here. cd stable-diffusion-webu Feb 19, 2023 · En este tutorial de Stable diffusion te enseño a usar OpenPose de Controlnet en Google Colab, con esta tecnología podrás aprender a colocar a tu personaje co GitHub - fkunn1326/openpose-editor: Openpose Editor for AUTOMATIC1111's stable-diffusion-webui. 関節をつまんで適当に動かして右下のSend to ControlNetを押す。. neither the open pose editor can generate a picture that works with the open pose control net. If I save the PNG and load it into controlnet, I will prompt a very simple "person waving" and it's absolutely nothing like the pose. (4) Select OpenPose as the control type. I only have two extensions running: sd-webui-controlnet and openpose-editor. The "trainable" one learns your condition. 45 GB large and can be found here. com) Then download the ControlNet models from huggingface (I would recommend canny and openpose to start off with): lllyasviel/ControlNet at main (huggingface. Official implementation of Adding Conditional Control to Text-to-Image Diffusion Models. May 16, 2024 · ControlNet & OpenPose Model: Both ControlNet and the OpenPose model need to be downloaded and installed. ColabというPython実行環境 (GPUも使える Jul 1, 2023 · Stable DIffusion Automatic1111にControlNetがインストールされている方向けの記事です。まだControlNetを導入していない方は次の記事をご覧ください ai-labs. ControlNet 1. This will be o Sep 9, 2023 · また、TDS_さんが開発されたAnimateDiff用のControlNetを使用してgifアニメーションを作成していきます。 この記事の対象読者 StableDiffusion WebUIを既に使っている方で、拡張機能のAnimateDiffを使用して、自分だけのアニメーションを生成したいと考えている方です。 Hi everyone ! I have some trouble to use openpose whith controlenet in automatic1111. There are three different type of models available of which one needs to be present for ControlNets to function. DroidMasta. i'm using ubuntu 22. It is now read-only. Agora podemos usar os modelos Depth, Canny e Openpos This tutorial builds upon the concepts introduced in How to use ControlNet in Automatic1111 Part 1: Overview and How to use ControlNet in Automatic1111 Part 2: Installation. 【Stable Diffusionとは？. Award. OpenPose Editor. 0を超えるとノイズのようなものが大量に発生してしまいます。ControlNet の使用時に画像が崩れやすい場合、重みを見直してみると良いかもしれません。 Controlnet 1. M1/M2 Macのローカル環境でControlNet(openpose)を用いてAIアートを出力する方法を解説します。 ControlNetの導入にはAutomatic1111の拡張機能を使用しますので、環境が無い方は事前に以下の記事を参考にAutomatic1111をインストールしておいてください。 Explore ControlNet on Hugging Face, advancing artificial intelligence through open source and open science. lllyasviel/sd-controlnet-scribble Trained with human scribbles: A hand-drawn monochrome image with white outlines on a black background. Now you should lock the seed from previously generated image you liked. One comment asked if we could make an image that was just extra long with all the poses we wanted included. (1) On the text to image tab (2) upload your image to the ControlNet single image section as shown below. また、 目のマークの斜線 をクリックで消せば、上手く処理されなかった手 Feb 23, 2023 · Doesn't show up in the interface. 】 Stable Diffusionとは画像生成AIの…. Quiz - ControlNet 1 We present a neural network structure, ControlNet, to control pretrained large diffusion models to support additional input conditions. Complex human poses can be tricky to generate accurately. We gave that a try and it turned out Feb 24, 2023 · はじめに. 手順3：必要な設定を行う May 16, 2024 · Learn how to install ControlNet and models for stable diffusion in Automatic 1111's Web UI. 8. Then go to controlNet, enable it, add hand pose depth image, leave preprocessor at None and choose the depth model. Civitai Helper. Photo realism dialed to 11. Apr 18, 2023 · キャラクターの表情を制御できる「ControlNet MediaPipeFace」の使い方. Hand Editing: Fine-tune the position of the hands by selecting the hand bones and adjusting them with the colored circles. ) Automatic1111 Web UI - PC - Free Sketches into Epic Art with 1 Click: A Guide to Stable Diffusion ControlNet in Automatic1111 Web UI. edit your mannequin image in photopea to superpose the hand you are using as a pose model to the hand you are fixing in the editet image. Aug 20, 2023 · こんにちは。こんばんは。キレネです。 今回は新たに登場したcontrolNETのpreprocessor「dw openpose」についてです。 紹介する内容 preprocessorとは 以前のpreprocessor「openpose full」との違いを解説 導入方法 ライセンスと商用利用について(本題) の4点を話していきます。 初めに 今回紹介するdw openposeは Automatica1111's API doc seems to be missing part about extensions. control net has not effect on text2image. I've tried rebooting the computer. 357. 1. Where to Get It: Civitai Helper GitHub Page; What It Does: Download models straight in AUTOMATIC1111. You can check out this table and read more about these extensions in detail below. Feb 11, 2023 · Below is ControlNet 1. And here my other tutorials for those who are interested in. Feb 21, 2023 · ControlNetには. hatenablog. 5 Beta 2用のControlNetの使用方法を追加 Mar 31, 2023 · Stable Diffusion（AUTOMATIC1111）をWindowsにインストール方法と使い方 この記事は，画像生成AIであるStable Diffusion web UIのインストール方法と使い方について記載します．. Run the Preprocessor using the “Explosion Icon”. Here’s a table listing all the best Automatic1111 extensions I’ve shared below. 45 GB. Notifications. Important notice: At the time of writing this tutorial, the OpenPose functionality in MPFB is experimental. Navigate to the Extensions page. . Eyes are improved and composition is also improved. (5) Select " openpose " as the Pre-processor. How to use ControlNet and OpenPose. Full Install Guide for DW Pos May 15, 2023 · AUTOMATIC1111 / stable-diffusion-webui Public. pth. lllyasviel/control_v11p_sd15_openpose. Of course, OpenPose is not the only available model for ControlNot. This is a full review. Installing OpenPose Editor Tab: Jun 25, 2023 · Openpose. Feb 15, 2024 · 試しに OpenPose で Weight に大きな値を入れてみましょう。 1. This Controlnet Stable Diffusion tutorial will show you how to install the tool and the bas Jul 24, 2023 · OpenPose don't work Hello, ControlNet functional, tried to disable adblock, tried to picture poses, nothing work. Don't forget to put --api on the command line. com 目次 OpenPoseとは？ モデルファイルのダウンロード OpenPoseの使い方 OpenPoseとは？ 読み込んだ画像からポーズを認識、それを生成する画像に Aug 9, 2023 · Our code is based on MMPose and ControlNet. Jun 10, 2023 · 新しいopenpose-editorです. 抽出したポーズに合わせて画像生成. En este tutorial de Stable Diffusion te enseño las mejoras y ventajas de controlnet 1. For example, without any ControlNet enabled and with high denoising strength (0. アニメ風イラストの生成方法は下記 Jul 3, 2023 · What if you want your AI generated art to have a specific pose, or if you want the art to have a pose according to a certain image? Then Controlnet’s openpos May 16, 2024 · ControlNet and OpenPose form a harmonious duo within Stable Diffusion, simplifying character animation. I go into detail with examples and show you ControlNet us Pose Editing: Edit the pose of the 3D model by selecting a joint and rotating it with the mouse. Each of them is 1. Click ‘Generate’ and watch as ControlNet refines your design. ControlNet output examples. Use the openpose model with the person_yolo detection model. only on img2img. また、上級者向けに、座標でいじれるものもあります。. ControlNet empowers you to transfer poses seamlessly, while OpenPose Editor Extension provides an intuitive interface for editing stick figures. You switched accounts on another tab or window. 元画像からポーズを抽出. You can update the WebUI by running the following commands in the PowerShell (Windows) or the Terminal App (Mac). This repository has been archived by the owner on Dec 10, 2023. openpose_handの手の認識精度はそこそこあるので、 基本的にopenposeを使用する場面ではopenpose_handを使用しておけばOK です。 手が認識出来なければ普通のopenposeで認識したときのように出力するだけなので。 Compress ControlNet model size by 400%. Perhaps this is the best news in ControlNet 1. This is a tutorial on how to export OpenPose poses from MPFB and use them with automatic1111 (or ComfyUI or similar). ip-adapter-plus-face_sd15. すると棒人間の画像がControlNetに入る。. Feb 25, 2023 · The ControlNet extension and Open Pose Editor for Stable Diffusion is the talk of town! See how you can gain more control in Stable Diffusion with trained Dr I recently made a video about ControlNet and how to use 3d posing software to transfer a pose to another character and today I will show you how to quickly a Feb 15, 2023 · Stable Diffusion web UI(AUTOMATIC1111)の拡張機能（Extension）「ControlNet」をインストールし、 姿勢を棒人間や実写・二次元画像、3D デッサン人形などから指定して画像を生成 する方法を解説します。 また、各種設定項目の解説と実際にやってみた所感を記しました。 Apr 5, 2023 · We got a lot of comments and interest for the previous post on characters with controlnet in Automatic1111 web ui running on runpod. If you haven’t read them yet, we recommend doing so. Ngrok_token: ". This includes employing reference images, negative prompts, and controlnet settings to govern key points’ positions. stable-diffusion-webuiはPythonで動くので、Pythonの実行環境が必要です。. Use_Cloudflare_Tunnel: Offers better gradio responsivity. Put slash and write docs on your stable diffusion webui link. But, if you have already have the ControlNet installed then its need to be updated before using Stable Diffusion XL Select the " Check for Updates ". We promise that we will not change the neural network architecture before ControlNet 1. Besides, we also replace Openpose with DWPose for ControlNet, obtaining better Generated Images. No more folder mess! Dec 14, 2023 · The process of setting up ControlNet on a Windows PC or Mac involves integrating openpose face and neural network details for stable diffusion of human pose data. Example: https://127. Feb 18, 2023 · 前提知識. (1) Click Enable. fkunn1326 / openpose-editor Public archive. 左の画像部では、丸が全て動かせます。. lllyasviel/sd-controlnet-seg Trained with semantic segmentation: An ADE20K’s segmentation protocol image. It's a big deal in computer vision and AI. 04 LTS,whith amd gpu (rx 6700 xt) here what happen in the terminal when i try to use openpose : Controlnet is one of the most powerful tools in Stable Diffusion. 手順2：必要なモデルのダウンロードを行い、所定のフォルダに移動する. This model has less creativity than Topaz but much more detail. These OpenPose skeletons are provided free of charge, and can be freely used in any project, commercial or otherwise. Apr 13, 2023 · ControlNet 1. 0:3080/docs. 18. (3) Enable the ControlNet extension by checking the Enable checkbox. 0から2. ControlNet. Select “OpenPose” as the Control Type. But getting it right is tough. 1 en automatic1111 con nu Mar 12, 2023 · 16. We’re on a journey to advance and democratize artificial intelligence through open source and open science. ControlNet is a neural network structure to control diffusion models by adding extra conditions. See the example below. 326. We would like to show you a description here but the site won’t allow us. 10. Make sure you have the right name for controlnet_model, hash does matter. We are the SOTA openpose model compared with other opensource models. What you need. Input your ngrok token if you want to use ngrok server. ip-adapter-full-face_sd15 - Standard face image prompt adapter. 5 controlnets (less effect at the same weight). We can then click into the ControlNet Unit 2 Tab. Increase guidance start value from 0, you should play with guidance value and try to generate until it will look okay for you. Use the ControlNet Oopenpose model to inpaint the person with the same pose. User: ". com/Mikubill/sd-webui-controlnet We need to make sure the depends are correct, ControlNet specifies openc Controlnet is one of the most powerful tools in Stable Diffusion. LARGE - these are the original models supplied by the author of ControlNet. The new Openpose Models for Face, Hands, and Body are extremely useful. DW Pose is much better than Open Pose Full. Feb 18, 2024 · OpenPose Editor allows you to edit the control image from ControlNet‘s Openpose preprocessor. You signed out in another tab or window. co) Place those models Nesse vídeo vamos falar sobre o novo Automatic1111 com suporte para Controlnet no Stable Diffusion SDXL. The path it installs Controlnet to is different, it's just in a dir called "Controlnet" inside the extensions folder. Install ControlNet in Automatic1111# Below are the steps to install ControlNet in Automatic1111 stable-diffusion-webui. ControlNet by far is the most powerful Stable Diffusion extension that can do a lot of things to help you generate better images. 1 - openpose Version. 21. ". Apr 13, 2023 · Pointer size: 135 Bytes. Achieve better control over your diffusion models and generate high-quality outputs with ControlNet. Girl in the icture that im generating, just wont respect the pose in the control net, and that pose dra AUTOMATIC1111 extensions. Stable Diffusion in the Cloud⚡️ Run Automatic1111 in your browser in under 90 seconds. It copys the weights of neural network blocks into a "locked" copy and a "trainable" copy. The preprocessor can generate detailed or coarse linearts from images (Lineart and Lineart_Coarse). ControlNet IP adapter . Feb 15, 2023 · こんにちは。Automatic1111のアップデートでControlNetが実装され、各種拡張機能が登場しております。その中でも被写体のポーズをコントロールできる『openpose』が注目されていますが、早速試したところ結構凄かったので取り急ぎ感想をnoteにまとめます。 Saved searches Use saved searches to filter your results more quickly Feb 10, 2023 · A kind user also shared a Blender project to create openpose-like images, so you can skip the preprocessor step for the openpose controlnet. Mar 4, 2023 · 次に、ControlNetの設定を変更して「 Multi ControlNet 」機能を有効化します。「設定」タブ→「ControlNet」→「 Multi ControlNet: Max models amount 」を「2」にしてweb UIを再起動してください。 これでControlNetにおいて. 0 or higher to use ControlNet for SDXL. 0 ControlNet models are compatible with each other. in my case it works only for the first run, after that, compositions don't have any resemblance with controlnet's pre-processed images. 1がリリースされたのを横目に見てました。今更ふつうの覚書書いてもあれだろうと思い、img2imgでのControlNetの使い方について書きます。 1. It works great with ControlNet. Figure 1. We then need to click into the ControlNet Unit 1 Tab. 2. Moreover, training a ControlNet is as fast as fine-tuning a Navigate to the WebUI dashboard. (5) Set the Control Mode to ControlNet is more important. Think animation, game design, healthcare, sports. Next lbeltrame/sd-webui-controlnet. 手順1：Stable Diffusion web UIとControlNet拡張機能をアップデートする. 5 and Stable Diffusion 2. This should filter out the relevant extensions. Multiple other models, such as Semantic Suggestion, User Scribbles, and HED Boundary are available. Reply. safetensors - Plus face image prompt adapter. This model is trained on awacke1/Image-to-Line-Drawings. This will set the Preprocessor and ControlNet Model. Searching for OpenPose: In the search bar, type “OpenPose”. をご紹介するという内容になっています。. try with both whole image and only masqued. Where to Get It: OpenPose Editor GitHub Page; What It Does: Edit poses in your images for even more control. Control picture just appears totally or totally black. Surprisingly, dw_openpose_full was available in ControlNet extension as preprocessor and I was able to use it. It does things a little differently by focusing on skin tones and fine details. Reload to refresh your session. Sep 14, 2023 · Controlnet は画期的な画像生成方法として一時期話題になりましたので知っている方も多いと思うのですが、簡単に説明しますと。 ランダム性の高いはずのAIイラスト生成の中で、ポーズや構図を具体的に指定して生成できるようになる拡張機能です。 最近 ControlNet 1. ago. Extra Long. Installing OpenPose Editor: Once you spot the OpenPose Editor Tab, click on the ‘Install’ button next to it. ControlNet Canny . xinsir/controlnet-openpose-sdxl-1. Apr 28, 2023 · 1ヶ月以上AI触る余裕がなくて、ControlNet1. The ControlNet learns task-specific conditions in an end-to-end way, and the learning is robust even when the training dataset is small (< 50k). Share. 74), the pose is likely to change in a way that is inconsistent with the global image. I wanna know if controlnets are an img2img mode only. 1 has the exactly same architecture with ControlNet 1. ) Automatic1111 Web UI - PC - Free Fantastic New ControlNet OpenPose Editor Extension & Image Mixing - Stable Diffusion Web UI Tutorial. Feb 23, 2023 · Also I click enable and also added the anotation files. ) Automatic1111 Web UI - PC - Free. ControlNetといえば、Openposeというぐらい代表的なモデルです。 openposeを使えば、簡単にポーズをとらせることができます。 reference_only. Set the reference image in the ControlNet menu. In this guide, we will learn how to install and use ControlNet models in Automatic1111. Especially the Hand Tracking works really well with DW Pose. 棒人間が入ったことを確認できたらPreprocessorにNone、Modelに lllyasviel/sd-controlnet-openpose Trained with OpenPose bone image: A OpenPose bone image. So here is a follow up to the comments and questions. This image can be created within the txt2img tab, or an existing image can Feb 22, 2023 · Automatic1111 Web UI - PC - Free. 0 webui and setup a new SD installation (because it's safer than trying to update current one), installed this sd-webui-openpose-editor and restarted webui, but the OpenPose Editor tab is still missing. 5 (at least, and hopefully we will never change the network architecture). If I use only one controlnet, either openpose or softedge will work, but not both together. 5までは人体が正常ですが、4. I've downloaded the new automatic1111 1. 顔の白丸 も、 手の青丸 も、もちろん ボーンの丸 も。. Fix editor window size with SD. Además muestro cómo editar algunas de ellas!Links que se mu Jun 13, 2024 · Best Automatic1111 Extensions . . 0. Now, you need to search for " Control Net " on search bar, then click " Install " button. It allows us to control the final image generation through various techniques like pose, edge detection, depth maps, and many more. 6. Click the “ ” button to access the ControlNet menu. Dec 5, 2023 · Successfully merging a pull request may close this issue. Openpose Editorを導入するとOpenpose Editorというタブが出てくる。. Control Stable Diffusion with Linearts. Feb 17, 2023 · openpose_handの所感とおすすめ用途. 1 is the successor model of Controlnet v1. Sep 6, 2023 · Hi there, I tried to install DWPose using "install from URL" option in Automatic1111 web UI, version 1. Enter OpenPose and ControlNet — two powerful AI tools that are changing OpenPoseを試す:直接棒人間を入力. This checkpoint is a conversion of the original checkpoint into diffusers format. Initial Image: An initial image must be prepared for the outfit transformation. This step-by-step guide covers the installation of ControlNet, downloading pre-trained models, pairing models with pre-processors and more. Now you can adjust the pose precisely when using ControlNet. mAP. Notes. 6 on Windows 10, everything works except this. Check the “Enable” checkbox in the ControlNet menu. ) In this video, I explain what ControlNet is and how to use it with Stable Diffusion Automatic 1111. stable-diffusion-webuiは、stable-diffusionをいい感じにUIで操作できるやつです。. Model file: control_v11p_sd15_lineart. OpenPose detects human key points like the Sep 5, 2023 · Kohya氏の「ControlNet-LLLite」モデルを使ったサンプルイラスト. Locate the ‘ControlNet’ module. Controlnet v1. (3) Select the Preprocessor to openpose_full. 209. (4) Select the Model to control_v11p_sd15_openpose. Open the Automatic1111 WebUI, move to the " Extension " tab, then select the " Load from " button. After downloading the models, move them to your ControlNet models folder. ただ従来のControlNetの弱みとして We would like to show you a description here but the site won’t allow us. io. When I make a pose (someone waving), I click on "Send to ControlNet. する処理を行う Openpose というモデルがあるのですが、今回の主役であるOpenpose EditorはこのOpenposeで使える棒人間を手軽に作ることができます。. yaml. I wanted to know does anyone knows about the API doc for using controlnet in automatic1111? Thanks in advance. Issue Description Filed this issue in the openpose editor repo, got redirected here (huchenlei/sd-webui-openpose-editor#57) Version Platform Description Using VENV: C:\ai\automatic\venv 23:59:29-707797 Feb 17, 2024 · 7. Open pose simply doesnt work. ControlNet and the OpenPose model is used to manage the posture of the fashion model. 1で変わったとこ 線画着色モデルなどが追加 ついに絵描きにストレートに役立つ機能が実装された？その他様々な Loading Extensions: Spot the Load from button and give it a click. 👉 START FREE TRIAL 👈. 400&nbsp;にバージョンアップ Jul 10, 2023 · Revolutionizing Pose Annotation in Generative Images: A Guide to Using OpenPose with ControlNet and A1111Let's talk about pose annotation. The first thing you need is Blender 4 with a version of MPFB built for Blender 4. ⚔️ We release a series of models named DWPose with different sizes, from tiny to large, for human whole-body pose estimation. kv gz re dz uw sh ek jt yr bf