Erasure tool

WATERMELON · **Joined:** Mar 23, 2018 **Posts:** 26

GIMP Version: 2.8.22
Operating System: Mac OS
GIMP Experience: New User

Hi!

I've erase the background of this image in GIMP to transparent (layer-Alpha selection -fuzzy select).
But still have some spots of color. I've tried erasure tool to clean what was left, but was not working.
Would you please tell me how can I use it?

ofnuts · **Joined:** Oct 25, 2010 **Posts:** 4812

Fuzzy select is fraught with peril and shouldn't be used alone. What is the original image like?

Wallace · **Posted:** Wed May 09, 2018 2:58 pm **(#3)**

WATERMELON wrote:

GIMP Version: 2.8.22
Operating System: Mac OS
GIMP Experience: New User

Hi!

I've erase the background of this image in GIMP to transparent (layer-Alpha selection -fuzzy select).
But still have some spots of color. I've tried erasure tool to clean what was left, but was not working.
Would you please tell me how can I use it?

If it's just one color,
say Green.
You can do a Color to Alpha.

Select the Color Picker Tool :colpick

.

Sample the color that needs to be removed.
Copy the HTML Color Code for that color.
Past the code into the Color to Alpha Dialog.
Select enter and this color will be removed from the image.

WATERMELON · **Joined:** Mar 23, 2018 **Posts:** 26

ofnuts wrote:

Fuzzy select is fraught with peril and shouldn't be used alone. What is the original image like?

This is the original image.
Thank you.

WATERMELON · **Joined:** Mar 23, 2018 **Posts:** 26

Wallace wrote:

WATERMELON wrote:

GIMP Version: 2.8.22
Operating System: Mac OS
GIMP Experience: New User

Hi!

I've erase the background of this image in GIMP to transparent (layer-Alpha selection -fuzzy select).
But still have some spots of color. I've tried erasure tool to clean what was left, but was not working.
Would you please tell me how can I use it?

If it's just one color,
say Green.
You can do a Color to Alpha.

Select the Color Picker Tool :colpick

.

Sample the color that needs to be removed.
Copy the HTML Color Code for that color.
Past the code into the Color to Alpha Dialog.
Select enter and this color will be removed from the image.

WATERMELON · **Joined:** Mar 23, 2018 **Posts:** 26

Wallace wrote:

WATERMELON wrote:

GIMP Version: 2.8.22
Operating System: Mac OS
GIMP Experience: New User

Hi!

I've erase the background of this image in GIMP to transparent (layer-Alpha selection -fuzzy select).
But still have some spots of color. I've tried erasure tool to clean what was left, but was not working.
Would you please tell me how can I use it?

If it's just one color,
say Green.
You can do a Color to Alpha.

Select the Color Picker Tool :colpick

.

Sample the color that needs to be removed.
Copy the HTML Color Code for that color.
Past the code into the Color to Alpha Dialog.
Select enter and this color will be removed from the image.

Hi!
Color picker - Select by color - Color to Alpha = dialog box with the color selected - enter and the green became brownish with white.
I did it again, same steps, nothing happen, apparently the color selected was not precise.
Tried to drag and drop the color to selection dialog, which ran away behind the image. I am in the same situation with different colors in some parts of the image.
Do you think I miss something?
Thank you.

Wallace · **Posted:** Wed May 09, 2018 11:39 pm **(#7)**

WATERMELON wrote:

Wallace wrote:

WATERMELON wrote:

GIMP Version: 2.8.22
Operating System: Mac OS
GIMP Experience: New User

Hi!

I've erase the background of this image in GIMP to transparent (layer-Alpha selection -fuzzy select).
But still have some spots of color. I've tried erasure tool to clean what was left, but was not working.
Would you please tell me how can I use it?

If it's just one color,
say Green.
You can do a Color to Alpha.

Select the Color Picker Tool :colpick

.

Sample the color that needs to be removed.
Copy the HTML Color Code for that color.
Past the code into the Color to Alpha Dialog.
Select enter and this color will be removed from the image.

Hi!
Color picker - Select by color - Color to Alpha = dialog box with the color selected - enter and the green became brownish with white.
I did it again, same steps, nothing happen, apparently the color selected was not precise.
Tried to drag and drop the color to selection dialog, which ran away behind the image. I am in the same situation with different colors in some parts of the image.
Do you think I miss something?
Thank you.

More than a single color and the Color to Alpha, won't be very effective.
You may have better results using a Layer Mask instead.

This example below was done using a Layer Mask.

Attachment:

Family 1 (1).png [ 92.5 KiB | Viewed 2461 times ]

WATERMELON · **Joined:** Mar 23, 2018 **Posts:** 26

Beautiful. I put a layer mask then continue with the steps. Thank you.

Wallace · **Posted:** Thu May 10, 2018 1:49 pm **(#9)**

WATERMELON wrote:

Beautiful.
I put a layer mask then continue with the steps.
Thank you.

If you know how to work with Layer Masks,
this should be a breeze for you.