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yanqi liu


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Last seen: 3 months ago |  Active since 2021

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MATLAB
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Answered
read medical images (mhd and raw format)
yes，sir，may use some toolbox，such as https://github.com/mattgibb/segmentation/blob/master/matlab/read_mri_data.m https://www.f...

1 year ago | 0

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Answered
How can I read a 12 digit code in a grayscale image?
yes，sir，may be use YOLO to detect and classify，add some cnn process to classify the region image if possible，can just use ctc n...

1 year ago | 0

Answered
Error using ./ in train faster RCNN
yes，sir，may be make image size to same，such as augmentedImageDatastore make image to 227*227

1 year ago | 0

Answered
Deep learning toolbox keeps disappearing
yes，sir，may be use type=classify(net.Faridtypeclassifier,mat2gray(X));

1 year ago | 0

Answered
how to open nrrd format using matlab
yes，sir，may be just modify the function，such as g = nrrdread('Segmentation.nrrd'); figure; imshow(g(:,:,100), [])

1 year ago | 0

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Answered
Remove centroid locations of objects that are too close
yes，sir，may be use pdist2， such as xf = rand(1, 10); yf = rand(1, 10); %using a loop M=[]; for j=1:length(xf) for i=1:...

1 year ago | 1

Answered
Why lost original file?
yes, sir, if you save the net to mat file，may be use save file.mat variable, such as save the cnn_model save a.mat cnn_model t...

1 year ago | 0

Answered
Exporting the ground truth file in Image labeler isn't working as expected.
yes，sir，may be use save data.mat or save data.mat DataSource LabelDefinitions LabelData wait it done,and then check the data...

1 year ago | 0

Answered
How to 'aggregate' a stack of images (picture 1) in matlab as in attached picture 2
yes，sir，may be use eval and for loop to make the structer，such as for i = 1:10 figure(i); imshow(eval(sprintf('df.x%d...

1 year ago | 0

Answered
creating a negative class in resnet50 classification model
yes，sir，may be use the score，if score is smaller，such as < 0.1，then make the image as Nan class，and save them to analysis.

1 year ago | 0

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Answered
Selecting multiple ROI in images for processing
yes，sir，may be use roipoly to make shape，such as im = imread('cameraman.tif'); figure; imshow(im); hold on; pts = []; while ...

1 year ago | 0

Answered
Using a cell array as input for a for loop
yes，sir，may be check the file，such as for i = 1 : length(uni_path_list) files = spm_select('List', uni_path_list{i}); ...

1 year ago | 0

Answered
How to read image character with OCR?
yes，sir，may be vd=find(comp==max(comp)) to find what vd is？ is the vd in range

1 year ago | 0

Answered
Extracting max intensity coordinates from image sequence
yes，sir，may be use some index to transfer，such as im = imread('rice.png'); [max_p, ~] = max(im(:)); disp(max_p) ind = find(i...

1 year ago | 0

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Answered
Extract horizontal and vertical lines from raster image
yes，sir，may be use open and close operation，such as load Iraster.mat bw = im2bw(Iraster); bw2 = imclose(bw, strel('line', 1e2...

1 year ago | 0

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Answered
How to fix Image tearing in video ? Why it Happen ?
yes，sir，may be use imresize to make image to smaller，or just use subplot(1,1,1); such as >> im = imread('football.jpg'); >>...

1 year ago | 0

Answered
How can I reject an image when the given template is not being matched (depending on any threshold value)?
yes，sir，may be set some thresh to make accept or reject rules，such as % Demo to use normxcorr2 to find a template (a white onio...

1 year ago | 0

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Answered
How to store sequence of images generated from MATLAB online in a Folder
yes，sir，may be check the folder，such as fb = cwtfilterbank('Signallength',length(x),'Wavelet', 'amor'); colormap = jet(128); ...

1 year ago | 1

Answered
how to count leaves?
yes，sir，what is leaves，is it the bigger area，may be use image segment，such as im = imread('https://www.mathworks.com/matlabcent...

1 year ago | 0

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Answered
Display same slice across all 3d images in the same folder
yes，sir，may be use for loop to get image list，and use data(:,:,12) to get the 12th slice

1 year ago | 0

Answered
Hello! I have an aspheric lens and I need to know the parameters of this lens, for that I need to know the surface's equation, can I use MATLAB to know the lens coordinates?
yes，sir，may be use image segment to get the edge，and then use fit_ellipse to get the parameters，such as im = imread('https://ww...

1 year ago | 0

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Answered
can someone help me edit the code below so that the output image can display the value of rotation angle of the object with axis guide
yes，sir，may be use minboundrect to get the rect area，such as

1 year ago | 0

Answered
Apply semanticseg to multiple images
yes，sir，may be make images to image dataset or just to 4-D format，such as >> size(I3) ans = 720 960 3 2 >...

1 year ago | 0

Answered
Hi all, how to create image datasets. I need them to train neural networks. I have about 15 to 20 images and I need to turn these images into an image dataset. Please.
yes，sir，may be use cnn transfer to train model，such as unzip('MerchData.zip'); % use image folder to get dataset imds = imag...

1 year ago | 0

Answered
Training my YOLOv2 object detector failed
yes，sir，may be use yolo v3、v4 to test，such as https://ww2.mathworks.cn/matlabcentral/fileexchange/72520-yolov3-yolov4-matlab

1 year ago | 0

Answered
How to save an image which only display properly using imshow(grayImg,[])?
yes，sir，may be use imwrite(mat2gray(grayImg),outputFileName); and， then to check the file

1 year ago | 0

Answered
how can i Find a midline using two lines
yes，sir，which is the center line，is it like this？ may be check https://ww2.mathworks.cn/matlabcentral/answers/1712640-how-...

1 year ago | 0

Answered
How to create a centerline between lines in image?
yes，sir，which is the target line，may be check this https://ww2.mathworks.cn/matlabcentral/answers/1712640-how-to-create-centerl...

1 year ago | 0

Answered
I am getting error in this imread statement. I don't know where it's wrong, please help, thanks
yes，sir，may be make some parameters to the function，such as re = img2coe3('./1.png', imread('football.jpg'));

1 year ago | 0

Answered
How to rotate an image in Matlab
yes，sir，may be rot90，such as im = imread('football.jpg'); for i = 1 : 4 im = rot90(im, 1); figure; imshow(im, []); ...

1 year ago | 0

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