FKP | Official PyTorch code for Flow-based Kernel Prior | Computer Vision library
kandi X-RAY | FKP Summary
kandi X-RAY | FKP Summary
This repository is the official PyTorch implementation of Flow-based Kernel Prior with Application to Blind Super-Resolution (arxiv, supp). Kernel estimation is generally one of the key problems for blind image super-resolution (SR). Recently, Double-DIP proposes to model the kernel via a network architecture prior, while KernelGAN employs the deep linear network and several regularization losses to constrain the kernel space. However, they fail to fully exploit the general SR kernel assumption that anisotropic Gaussian kernels are sufficient for image SR. To address this issue, this paper proposes a normalizing flow-based kernel prior (FKP) for kernel modeling. By learning an invertible mapping between the anisotropic Gaussian kernel distribution and a tractable latent distribution, FKP can be easily used to replace the kernel modeling modules of Double-DIP and KernelGAN. Specifically, FKP optimizes the kernel in the latent space rather than the network parameter space, which allows it to generate reasonable kernel initialization, traverse the learned kernel manifold and improve the optimization stability. Extensive experiments on synthetic and real-world images demonstrate that the proposed FKP can significantly improve the kernel estimation accuracy with less parameters, runtime and memory usage, leading to state-of-the-art blind SR results.
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Top functions reviewed by kandi - BETA
- Calculate the PSNR residuals for a given directory
- Compute the Sigma similarity between two images
- Compute the SS similarity between two images
- Calculate the PSNR distance between two images
- Skips over the input channels
- Return an activation function
- Generate a model
- Apply pre_process to x
- Evaluate the model
- Compute the log - probability of the model
- Plot a sample distribution and plot it
- Parse arguments
- Compute the similarity between two images
- Train TFKP using TFP
- Forward transform function
- Create a dataset from mat files
- Create command line parameters
- Compute the kernel
- Upsample a convolutional convolution
- Create a penalty mask
- Helper function to get noise
- Computes the difference between two images
- Fetches the dataset files
- Generate a dataset
- Calculate the forward approximation of the model
- Train and evaluate a model
FKP Key Features
FKP Examples and Code Snippets
Lines of Code : 6License : Permissive (Apache-2.0)
Copy@article{liang21fkp,
title={Flow-based Kernel Prior with Application to Blind Super-Resolution},
author={Liang, Jingyun and Zhang, Kai and Gu, Shuhang and Van Gool, Luc and Timofte, Radu},
journal={arXiv preprint arXiv:2103.15977},
year={2021 cd data
python prepare_dataset.py --model DIPFKP --sf 2 --dataset Set5
python prepare_dataset.py --model KernelGANFKP --sf 2 --dataset DIV2K
cd DIPFKP
python main.py --SR --sf 4 --dataset Test
Community Discussions
Trending Discussions on FKP
QUESTION
I am trying to parse an xml file with golang.
I've used xsdgen to generate the struct part
I cannot parse the file with xml.Unmarshal(byteValue, &data)
I expected the program to print : GrandTotalAmount.Value which is 671.15 but it is printing 0.
The variable data seems empty, as this line didn't worked as i expected :
xml.Unmarshal(byteValue, &data)
I haven't seen any errors compiling (or i don't know where to find them)
I feel like i am missing something, can you help me please ?
XSD files : https://gist.github.com/hyperi0n/a5eb805d9f91de84d341ea75cfe6d1bf
XML file :
...ANSWER
Answered 2020-Nov-21 at 17:46I think this is related to Go Issue #13400. There seems to be an issue with the namespace prefixes. You can in fact ignore the prefixes in your struct tags while Unmarshaling.
The following code should work for you:
QUESTION
I was hoping someone could help me figure this out, i'm a newbie when it comes to coding.
I've made a form and a background in two seperate files. What i'm trying to achieve is:
- Merge both files, wherein the form should be on the middle-right side of the screen and I want the background to stay like it is, it should keep changing both the images and background colour.
- In the form, my scrollbar is going out of the div which has a border-radius, I want it to stay inside.
- In the form, if you look at the dropdown menu, the bottom arrow isn't properly aligned, how can I move it towards it's left so it's visible properly.
I've tried a few solutions already, but either I mess up the background or the form's alignment changes. Please have a look at the following code for both the files and hopefully help a brother out.
I've also attached their Codepen links: (i) For the background: (ii) For the form:
CODE FOR THE BACKGROUND:
HTML:
...ANSWER
Answered 2020-Aug-13 at 15:36I added a container for both components, merged them and fixed css.
The key was to put the images slideshow in position: fixed; and center the form.
QUESTION
- I have this currency converter api website that I have used for my converter module.
- I want to simplify the code by extracting the data from the json data shown at the bottom of the question
My Code:
...ANSWER
Answered 2020-Jun-30 at 15:28data object
- The
key-valuepair withidis underdata['results']- Iterate through each
key(e.g.'BTN') andvalue({'currencyName': 'Bhutanese Ngultrum', 'id': 'BTN'}) to get theid
- Iterate through each
- The
keyfor each currency is also theid'BTN': {'currencyName': 'Bhutanese Ngultrum', 'id': 'BTN'}
- This will give you all the data, not just
id - Use pandas.json_normalize & pandas.concat to create a dataframe of the JSON data.
pd.json_normalize(v) for v in data['results'].values()creates a dataframe for each{'currencyName': 'Albanian Lek', 'currencySymbol': 'Lek', 'id': 'ALL'}pd.concat(...)combines all the dataframes into one dataframe.
QUESTION
Can anyone help me? I make a call with Retrofit. The Strings in the response is on but I can not take the rates. The only class that successfully return me the rates is the Object but then I can not use it properly. I have use List, ArrayLists , Arrays of objects but still nothing. Any good idea?
...ANSWER
Answered 2020-Jan-25 at 20:22Use a Map to convert the rates.
The problem is that rates is not a list, but a JSON object. Therefore, for Retrofit to be able to parse it you would need to define the POJO object like the following:
QUESTION
I am trying to get currency exchange rates from fixer.io (in JSON format) and store it into firestore using the firebase cloud functions. The code works great if I did not commit the batch, it is able to show the results into the console. But when I commit the batch, there is nothing being created in my firestore and there are no error logs shown in the console except for the usual Function executed, finished with status "ok"
Below is my Cloud Function's code. I have included an API key in the request method too, feel free to use it as I only use it for testing purposes
...ANSWER
Answered 2020-Jan-16 at 23:38Your problem comes from the fact that a call with request does not return a promise, while in Cloud Functions triggered by background events (like .onUpdate() for Firestore) you must return a Promise. Watch this official video series for more details: https://firebase.google.com/docs/functions/video-series/ (in particular the 3 videos titled "Learn JavaScript Promises", which explain it very well).
So you need to use an interface wrapper for request, like request-promise.
The following modified code should work:
QUESTION
I've been teaching myself this since November and any help on this would be really appreciated, thank you for looking, as I seem to be going round in circles. I am trying to use a Pytorch CNN example that was used with the Mnist dataset. Now I am trying to modify the CNN for facial key point recognition. I am using the Kaggle dataset (CSV) of 7048 training images and key points (15 key points per face) and 1783 test images. I split training dataset and converted the images to jpeg, made separate file for the key points (shape 15, 2). I have made dataset and data loader and can iterate through and display images and plot key points. When I run the CNN I am getting this error.
...ANSWER
Answered 2019-Mar-01 at 02:00to understand what went wrong you can print shape after every step in forward :
QUESTION
Hello i have an URL i get from the Server:
What i need now is from the Query to get the "code" which is this part 11448259-7efe-4c6e-bbce-216bb8578bd5, how to i split this String so to get only the code or other parameters using Java.
...ANSWER
Answered 2018-Nov-16 at 13:09You can use the following code to get the value for query param code.
QUESTION
I am trying to access this array:
...ANSWER
Answered 2018-Oct-25 at 12:41If currency is a string, it won't work. You'll need to parse it into an array, as ngFor only works with arrays.
QUESTION
I want to write a program that opens a countryInfo.csv file and extracts the country name, capital city and population from each row, then writes a new file named country_simple_info.csv with country, capital and population in each row, with the rows sorted by population size, largest first. The file has columns with other information such as continent, languages, etc. but the code should ignore those. The following is my attempt at the code:
...ANSWER
Answered 2018-Aug-15 at 03:54Just pass in the fieldnames you want to the DictWriter and include the argument extrasaction='ignore', which will only write out the columns you want, e.g.:
QUESTION
So I'm creating currency converting app on android I have two spinners and I'm trying to hide option from the second spinner when that option is already selected by the first spinner, like if i choose to convert from USD the second spinner USD option should disappear but I just don't have any idea how to hide an option I searched on google most question asks about hiding the whole spinner not option
...ANSWER
Answered 2018-Jul-13 at 07:29 You can set an action listener on the first spinner which will set items on the second spinner
/*Dynamic spinner adapters*/
public void onItemSelected(AdapterView adapterView, View view, int n, long n2) {
switch (adapterView.getId()) {
case R.id.firstspinner: {
ArrayList allItems = new ArrayList<>(Arrays.asList("item1", "item2", "item3"));
String selected = ((Spinner) findViewById(R.id.firstspinner)).getSelectedItem().toString());
Integer index = allItems.indexOf(selected);
allItems.remove(index);
((Spinner) findViewById(R.id.secondspinner)).setAdapter(new ArrayAdapter(this, R.layout.spinresoc, allItems) {
public View getDropDownView(int n, View view, ViewGroup viewGroup) {
TextView textView = (TextView) super.getDropDownView(n, view, viewGroup);
textView.setTextSize((float) 15.0f);
return textView;
}
public View getView(int n, View view, ViewGroup viewGroup) {
TextView textView = (TextView) super.getView(n, view, viewGroup);
textView.setTextSize((float) 15.0f);
return textView;
}
});
break;
default:
break;
}
}
/*XML resource R.layout.spinresoc*/
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Install FKP
You can use FKP like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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