Make an artificial silhouette of the spray given in image using sine function.

Question

Edin Michael 2023-8-8

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https://ww2.mathworks.cn/matlabcentral/answers/2006287-make-an-artificial-silhouette-of-the-spray-given-in-image-using-sine-function

编辑： Praveen Reddy 2023-8-23

Spray-1.png

I would like to make a silhouette of the spray given in image using sine function. I should be able to change the phase angle on both the left and right sides.

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Image Analyst 2023-8-8

To get a binary image you can use imbinarize. I have no idea what you're talking about when you talk about sine and phase angles. What does that have to do with creating a silhouette?

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Answer 1

Praveen Reddy 2023-8-23

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2006287-make-an-artificial-silhouette-of-the-spray-given-in-image-using-sine-function#answer_1291802

编辑：Praveen Reddy 2023-8-23

在 MATLAB Online 中打开

silhoutteFigure.fig

Hi Edin,

I understand that you are trying to make silhouette of an image. You can use sine function as “amplitude * sin(frequency * x + leftPhaseAngle)” to generate y-axis values with varying phase angles for silhouette.

sprayImage = imread('spray_image.jpg');
sprayImage = im2double(sprayImage);
amplitude = 0.5; % Adjust the amplitude as needed
frequency = 0.02; % Adjust the frequency as needed
leftPhaseAngle = pi; % Adjust the phase angle for the left side
rightPhaseAngle = 0; % Adjust the phase angle for the right side
x = 1:size(sprayImage, 2);
% Generate the y-axis values using the sine function with varying phase angles
y = amplitude * sin(frequency * x + leftPhaseAngle);
y = repmat(y, size(sprayImage, 1), 1);
% Apply the silhouette effect to the image using a smooth transition
silhouetteImage = sprayImage .* (1 - y) + y;
figure;
imshow(silhouetteImage);

By experimenting with different values for the parameter's amplitude, frequency, leftPhaseAngle, and rightPhaseAngle in the above code, you can customize the silhouette effect to achieve desired appearance.

To know more about creating a silhouette from an image, please refer to the following MATLAB answer

https://in.mathworks.com/matlabcentral/answers/326612-how-to-create-a-silhouette-from-image

Hope this helps!