define Color at x:(x position :: custom-arg) y:(y position :: custom-arg)
set [color v] to (color :: custom-arg)

Hi im wanting to define this block for a pen webcam but i seem to not find anything
If any of you guys know how to that would be awesome and i will give credits to you thanks!!

sharngi wrote:

define Color at x:(x position :: custom-arg) y:(y position :: custom-arg)
set [color v] to (color :: custom-arg)

Hi im wanting to define this block for a pen webcam but i seem to not find anything
If any of you guys know how to that would be awesome and i will give credits to you thanks!!

Need more info. What is “color”?

Reading a pixel off the screen is unbelievably slow - I hope the camera is pointing at a still image. It will take minutes to scan.

footsocktoe wrote:

sharngi wrote:

define Color at x:(x position :: custom-arg) y:(y position :: custom-arg)
set [color v] to (color :: custom-arg)

Hi im wanting to define this block for a pen webcam but i seem to not find anything
If any of you guys know how to that would be awesome and i will give credits to you thanks!!

Need more info. What is “color”?

its the color of the define block since you cant define reporter blocks

sharngi wrote:

footsocktoe wrote:

sharngi wrote:

define Color at x:(x position :: custom-arg) y:(y position :: custom-arg)
set [color v] to (color :: custom-arg)

Hi im wanting to define this block for a pen webcam but i seem to not find anything
If any of you guys know how to that would be awesome and i will give credits to you thanks!!

Need more info. What is “color”?

its the color of the define block since you cant define reporter blocks

The color of the define block is purple.

What are you trying to do? What are you trying to accomplish? Are you trying to scan something like gtoal suggested?

footsocktoe wrote:

sharngi wrote:

footsocktoe wrote:

sharngi wrote:

define Color at x:(x position :: custom-arg) y:(y position :: custom-arg)
set [color v] to (color :: custom-arg)

Hi im wanting to define this block for a pen webcam but i seem to not find anything
If any of you guys know how to that would be awesome and i will give credits to you thanks!!

Need more info. What is “color”?

its the color of the define block since you cant define reporter blocks

The color of the define block is purple.

What are you trying to do? What are you trying to accomplish? Are you trying to scan something like gtoal suggested?

Yes im making a pen webcam

sharngi wrote:

Yes im making a pen webcam

1- I think nobody is understanding quite well your idea. Remember, for now or in the future, if you need help with something, try to be as clear and specific as you can, so the community can help you.
2- I believe I understood, let's give it a try… what you want is to detect what's the color in a certain (X, Y) position… Am I right?

JEMA2311 wrote:

sharngi wrote:

Yes im making a pen webcam

1- I think nobody is understanding quite well your idea. Remember, for now or in the future, if you need help with something, try to be as clear and specific as you can, so the community can help you.
2- I believe I understood, let's give it a try… what you want is to detect what's the color in a certain (X, Y) position… Am I right?

she wants to extract an image from the camera by reading pixels off the screen.

i think there may be some examples of how to do that in the “graphics101” studio.

sharngi wrote:

footsocktoe wrote:

sharngi wrote:

footsocktoe wrote:

sharngi wrote:

define Color at x:(x position :: custom-arg) y:(y position :: custom-arg)
set [color v] to (color :: custom-arg)

Hi im wanting to define this block for a pen webcam but i seem to not find anything
If any of you guys know how to that would be awesome and i will give credits to you thanks!!

Need more info. What is “color”?

its the color of the define block since you cant define reporter blocks

The color of the define block is purple.

What are you trying to do? What are you trying to accomplish? Are you trying to scan something like gtoal suggested?

Yes im making a pen webcam

Then you should know this about Scratch and the colors of pixels…

In Scratch, you can set up a reference color and then detect whether a pixel is that color or not. That's all you can do.

Since there are over 16 million colors in the RGB color space, detecting which one a pixel is would require 16 million detectors. Obviously impossible.

BUT, if you limit the number of colors you detect to fewer, then it becomes more possible.

HOWEVER, you should also know this. The color detect block is slow, so you could not scan a moving webcam image. The webcam would have to be focused on something that does not move and the scanning would take anywhere from several minutes to several hours depending on how many colors you used.

If you have a dream of capturing moving webcam images, then forget it. That one is impossible to do with Scratch.