Hi Team,
Below is my query
image = torch.randn(1,256,16,16)
#Target color blue
Target_color_blue = torch.zeros(1, 1, 3, dtype=torch.float)
Target_color_blue[:,:,2] = 255
#Target color red
Target_color_red = torch.zeros(1, 1, 3, dtype=torch.float)
Target_color_red[:,:,0] = 255
#Target color green
Target_color_green = torch.zeros(1, 1, 3, dtype=torch.float)
Target_color_green[:,:,1] = 128
Target_color_list = [Target_color_blue,Target_color_red,Target_color_green]
#Stacking both red and blue tensors
Target_colors = torch.stack(Target_color_list)
Want to multiply
image * Target_colors
Target color shape is torch.Size([3, 1, 1, 3]) while image shape is (1,256,16,16)
So final shape should be of length 3
@KURUVILLA_ABRAHAM your image is of size (1,256,16,16)
What do the individual dimensions denote

Which one denotes channel : If the channel is 256 or 16 how do we select the channel for multiplication with the target color

Is the size of the image 16 height * 16 width?

Just curious to know, what are you trying to achieve through this
Can you provide a sample output.
Hello anant ,
(1,256,16,16)  represent (batch * channel* height * width)
Target colors in this case are 3  I am using below code to produce it
#Target color blue
Target_color_blue = torch.zeros(1, 1, 3, dtype=torch.float)
Target_color_blue[:,:,2] = 255
#Target color red
Target_color_red = torch.zeros(1, 1, 3, dtype=torch.float)
Target_color_red[:,:,0] = 255
#Target color green
Target_color_green = torch.zeros(1, 1, 3, dtype=torch.float)
Target_color_green[:,:,1] = 128
Target_color_list = [Target_color_blue,Target_color_red,Target_color_green]
#Stacking both red and blue tensors
Target_colors = torch.stack(Target_color_list)
now my output should be 
all colors mutiplied with image1
image1Target_color1
image1Target_color2
image1*Target_color3
all colors mutiplied with image2
image2Target_color1
image2Target_color2
image2*Target_color3
@KURUVILLA_ABRAHAM in that case there is mismatch between the number of channels in the Target_colors and the channels in image
Taget_colors have 3 channels and image has 256 channels. How will we able to multiply?
Ok in that case if I increase the color dimension to 256 will it impact my color
Absolutely. 3 Channels refer to RGB
If you change to 256 you will have to come up with your own understanding of what each channel means, as it is a mathematical representation