How to convert 3D image to 1D data?

I had the temperature temperature readings of a sensor which is 5002x1 double. I took the readings for different temperatures say 8 and made the temp as a 2D array of 5002x8 double. I converted it into a 3D image (.png) and did some processing. Now I want to convert this 3D image back to temp data. How can I do that?

[Daniel M]

How did you make a 3D image out of 2D data?

[Turlough Hughes]

Do you mean a 3D array with dimensions 5002x8x3?

What code did you use to end up with that?

[TheRealTonyStark]

I just used the command "image(2D_data)" to end up with a 5002x8x3 image.

[Turlough Hughes]

Hey Viswanathan, Can you upload an original image?

[TheRealTonyStark]

[TheRealTonyStark]

Above is the processed image of the temperature data. I need to convert it back to temperature data. The yellow line shows the const temperature.

Answer 1

[KALYAN ACHARJYA]

result=reshape(3Dimage,[1 rows*colm*depth])

[TheRealTonyStark]

Sir, I think you have misunderstood my question. I want to reverse the image mapping function and get the original temperature data which is not on the range 0-255 from the processed (.png) image.

Reference : Intensifying the response of distributed optical fibre sensors using 2D and 3D image restoration. (https://www.nature.com/articles/ncomms10870)