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yanqi liu


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Last seen: Today Active since 2021

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Answered
How to write a video file without changing the pixel values?
yes,sir,may be use v = VideoWriter('out.avi','Uncompressed AVI'); to creat avi file use 'Uncompressed AVI' but,as @DGM said,t...

20 hours ago | 0

Answered
Convert a LayerGraph into a DAGNetwork - Validate and Initialize the Net
yes,sir,may be use assembleNetwork for pretrained layers,if make an init empty unet,may be just use clc; clear all; close all; ...

20 hours ago | 0

Answered
How to separate features and target (numeric values) in a tabular text datastore to import into Deep Network Design?
yes,sir,may be choose the data to X and Y,such as % 500 rows 10 features and the target. X = Data(:, 1:10); % 10 features Y =...

20 hours ago | 0

Answered
How do I create and plot a confusion matrix for my trained convolutional neural network?
yes,sir,if want get the data information,may be use [c,cm,ind,per] = confusion(augimdsValidation.Labels,YPred)

1 day ago | 0

Answered
How many features i need select from a set ranked image feature space?
yes,sir,may be use activations to get the vector,such as activations(net,data,layer,'OutputAs','rows');

1 day ago | 0

Answered
I need to implement a code for Handwritten digits recognition( Using MNIST data set) using Stochastic gradient descent, backpropogation with momentum and using sigmoid activation function.
yes,sir 1 hidden layer neural network with 784 inputs, 100 hidden neurons, 10 outputs(one for each digit) with backpropagation ...

1 day ago | 0

Answered
Deeplearning validationData in 2021b (deep learning toolbox)
yes,sir,may be upload some code or data,or use A = cellfun(@single,your data) such as A = cellfun(@single,{1,2}) to avoid dat...

1 day ago | 0

Answered
Concatenate SSCB results from image layer with numeric CB feature data in deep learning model.
yes,sir,is the classes number 10?may be use layersTransfer = net.Layers(1:end-3); numClasses = 10; layers = [ layersTran...

1 day ago | 0

Answered
Selection for inputs does not have 0 elements nprtool GUI error
yes,sir,may be ensure the inputlayer dimension,is it 9*x ?

1 day ago | 0

Answered
Trying to create neural network but getting a NaN error from dataset
clc; clear all; close all; %Import/Upload data load generated_data.mat %transposing glucose data X1_T = X1'; %transposing i...

1 day ago | 0

Answered
How to threshold an image when background and foreground color are similar to each other?
clc; clear all; close all; img = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/819834/image.png'); % ...

1 day ago | 0

| accepted

Answered
how to increase accuracy image processing for extract decimals
yes,sir,may be make some image process,such as im2bw、imbinary,and use the ocr number parameter,such as ocr(bwt,'CharacterSet','...

1 day ago | 0

Answered
RGB to Grayscale without using rgb2gray
convert RGB to grayscale without rgb2gray convert back to rgb from grayscale clc; clear all; close all; RGB_image = imread('...

1 day ago | 0

Answered
How to insert image from my computer while report generation using mlreport?
yes,sir,may be use import mlreportgen.dom.* import mlreportgen.report.* import mlreportgen.dom.*; rpt = Document('exampleR...

2 days ago | 0

Answered
How to make mnist data with my 10 similar 28x28 png images?
yes,sir,is it mean generate matrix use the 28*28 gray png files? may be use the mnist structure,use loop to read the file,and m...

3 days ago | 0

Answered
How to calculate the radial void fraction of non spherical particles from in an image
yes,sir,may be consider clc; clear all; close all; img = imread('https://ww2.mathworks.cn/matlabcentral/answers/uploaded_files...

3 days ago | 0

Answered
How to Create Defect Class for Image Processing?
yes,sir,may be use regionprops to get some properties,such as Boundingbox,Area,Circularity then make judge rule to classify

3 days ago | 0

Answered
Streaming a URL from VLC to MATLAB
yes,sir,may be make one http server to get video stream and transfer to image,then use client to request the data

3 days ago | 1

Answered
how to display an image
yes,sir,may be use figure(11); clf; set(gcf, 'Position', get(0,'Screensize')); for n= 1: length(propied) BBs= propied(n)...

3 days ago | 0

Answered
Is there a way to segment this image into 3 parts, even though the colours are so similar?
yes,sir,may be use kmeans or watershed clc; clear all; close all; img = imread('https://www.mathworks.com/matlabcentral/answ...

3 days ago | 0

Answered
How Can I embed the length of my secret message in the special bytes of the cover image
yes,sir,may be use base64 to encode message,and use lsb method to embed the string into image matrix

3 days ago | 0

Answered
Invalid training data. For image, sequence-to-label, and feature classification tasks, responses must be categorical.
yes,sir,please use the follow code to test imds1 = transform(imds,@(x)imgaussfilt(x,2)); %change to imds1 = imageDatastor...

3 days ago | 0

| accepted

Answered
GUI - Error when trying to program the second slide bar for the upper limit for variable hue in image processing (lower limit succeeded)
yes,sir,use Rik method,modify as clc; clear all; close all; RGB_Image_Re = imread('https://ww2.mathworks.cn/matlabcentral/answ...

4 days ago | 0

Answered
Call a folder from desktop and use images inside it
% read [filename, pathname, ~] = uigetfile( ... { '*.bmp;*.jpg;*.tif;*.png;*.gif','All Image Files';... '*.*', 'all ...

4 days ago | 0

Answered
How to determine height of a particular color in an image?
clc; clear all; close all; img = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/817024/image.png'); jm...

4 days ago | 0

Answered
How to create executable file for pretrained model Using GUI
yes,sir,when use gui transfer to exe,offen use mcc,and now suggest use applicationCompiler may be use web api to generate http ...

4 days ago | 0

Answered
Index exceeds the number of array elements
clc clear all close all format long g; format compact; im1 = imread('https://ww2.mathworks.cn/matlabcentral/answers/uploa...

4 days ago | 0

Answered
Mapping two sets of co-ordinates with two different colours onto blank white screen
yes,sir,may be use clc clear all close all Screen = 255*ones(1024,1280,3); r1 = [randi([1 1000],1,1500)', randi([1 1000],...

4 days ago | 1

| accepted

Answered
Apply a non defined noise to an image
yes,sir,may be define the noise matrix and add to image ,such as x = imread('carmeraman.tif'); nx = double(x) + 18*randn(siz...

4 days ago | 0

Answered
Split the license plate letters
yes,sir,may be use clc; clear all; close all; img = imread('https://ww2.mathworks.cn/matlabcentral/answers/uploaded_files/8073...

4 days ago | 0

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