How to quickly remove the background ?

[PhotoWil]

Hi,

Could you help me to find a quick method to remove the background of this kind of pictures ?

When I use the "Select Subject" function of Photoshop, the result is not good (see picture below).

So I have to select each pin the package of the electronic component to select the complete component

Then I invert the selection to remove the background.

Do you know a quick method to remove the background ?

Thanks a lot for your help 🙂

[PhotoWil]

... I would like to get something like that but without to have to select pin after pin ...

[JJMack]

It will not be that good done quickly.  Using the Magic wand and maskinh you will be able to remove nost of the blur board but not all near the chip. You would need to do a pin at a time,  Here is a quick magic wand created mask.

[Norman Sanders]

Fig 1.  Your image with a transparent layer below it.

Fig 2.  Mode changed to Lab Color,  b channel duplicated

Fig 3.  Choose Curves > Auto and increase steepness of Curve of b dupe (Alpha) channel by dragging the endpoints horizontally.

Fig 4.  b Apha channel as mask on image layer

Fig 5. Return to RGB mode. Change transparent layer to white
 Note: No brushwork.

[PhotoWil · Accepted solution]

Hello norman.sanders 🙂
Your method seems very good but I don't succeed to do it.
For the fig 3, what do you call "b dupe (Alpha)" ?

Thanks 🙂

[Norman Sanders · Accepted solution]

For the fig 3, what do you call "b dupe (Alpha)" ?

The instruction is to make a duplicate copy of the  b  channel. A duplicate copy is sometimes called a "dupe".  

The channel that holds the duplicate is called an Alpha channel.

I used the words dupe and alpha so that people who call it a dupe or an Alpha channel would know what I was referrng to.

To make the duplicate drag the channel down to to symbol I marked in the center image.

One small additional note: Thank you for the Correct notation but you should mark my post, not your own. 

[PhotoWil]

Hello norman.sanders,

Thank you, yours explanations helps me because I didn't know the terms "dupe" and "alpha".

How to do : "increase steepness of Curve of b dupe (Alpha) channel by dragging the endpoints horizontally" ?

because I don't get the same results as your fig. 3.

Thanks 🙂

[PhotoWil]

Hello norman.sanders,

it is ok now, I found how to get your results, it is perfect now 🙂

Very good method 🙂

Thanks a lot for your help 🙂

[Norman Sanders]

Happy to help. Good luck!

     Norman