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converting part of image to black and white

  • 15-11-2006 2:25pm
    #1
    bovril
    Registered Users, Registered Users 2 Posts: 1,445 ✭✭✭


    Hi Guys, I know this was covered in the main forum some time ago but I can't find the post and the search seems to be broken.

    I have a photo that I want to convert to Black and White but there is a flower in it I want to keep in it's original colour. I can't remember what the post did but here's what I tried.. I blew the photo up with the magnifying glass to 300-400% and used the lasso to highlight the flower. I then created a new layer with this selection. I converted the original layer to black and white. Only problem is there is a white line around the flower and it's quite obvious that it has been converted. Is there a way to merge the flower edge into the black and white picture to make it look less obvious. I tired using the feather tool but I don't know if I was using it correctly but I couldn't get rid of the white around the flower.

    any help would be greatly appreciated..

    The pic I am working with is here

    http://static.flickr.com/111/297956254_9cee4a9ece_b.jpg


Comments

  • #2
    latchiko
    Registered Users, Registered Users 2 Posts: 287 ✭✭latchiko


    Hi bovril, there are a few ways to do this but the easiest in your case may be to create a new layer and convert it to black and white. Then use the eraser with a soft edge to remove the flower, thus allowing the flower in the layer beneath to show through. Hope this helps.


  • #3
    5uspect
    Moderators, Arts Moderators Posts: 10,518 Mod ✭✭✭✭5uspect


    Building on what latchiko said, instead of using the eraser tool on the new duplicated layer add a layer mask to the duplicate and paint with black and white to control transparency. This allows you to fix mistakes and change your mind without deleting pixels.
    I posted about this earlier... if a little poorly :o (posts 14 and 16)


  • #4
    bovril
    Registered Users, Registered Users 2 Posts: 1,445 ✭✭✭bovril


    thanks for the replies will try them both out as soon as I can.


  • #5
    Zillah
    Registered Users, Registered Users 2 Posts: 17,371 ✭✭✭✭Zillah


    No no no. The easiest way is to select the flower as you did already, "invert selection" and desaturate. Ta da! Save the selection before you destaurate so you can go back and add a bit or remove a bit if you need to adjust it.

    Thats what I did for the raven/rook picture on the forum a while back.


  • #6
    5uspect
    Moderators, Arts Moderators Posts: 10,518 Mod ✭✭✭✭5uspect


    Zillah wrote:
    No no no. The easiest way is to select the flower as you did already, "invert selection" and desaturate. Ta da! Save the selection before you destaurate so you can go back and add a bit or remove a bit if you need to adjust it.

    Thats what I did for the raven/rook picture on the forum a while back.

    That is certainly the quickest way but a layer mask allows you to correct your desaturation in real time by simply painting it on or off without the need to go back. So you can easily add less than 100% selection with a soft gray brush to get a blurred edge or just go for the sharp edge with a hard black brush.

    Another option is to desaturate and click the little box beside the history state before that action in the actions pallet and grab the history brush to do your painting...


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