Seamer : Seam Carving Plugin

vcmohan · 11th March 2008, 10:20

Considerable interest was generated when a new technique named as "Seam Carving for Content-Aware Image Resizing"
was presented in a paper by Shai Avidan and Ariel Shamir. Recently there was a reference to seam carving in one of Avisynth threads also.

On seeing this post in this forum, due to curiosity I attempted two approaches to acheive seam carving in a fully unsupervised mode. The results are displayed here. They are most unsatisfactory. The reason being that I have yet to formulate a criterion as to what is a valid or acceptable seam that is universally ( or largely) suitable for carving. May be some one guides me in this.

Below are two sets of images. Each set shows the input image, and 4 variants of seam carving, using the two functions RSeamer and WSeamer of Seamer plugin.
set 1 :

set 2:

The above images were produced using script below in addition to usual source, crop, stack etc.

Code:

sm1 = wseamer(im1, x = 480,y = 350, max = true,nw = 2, test = 0)
sm2 = wseamer(im1, x = 480,y = 350, max = false,nw = 2, test = 0)
sm3 = Rseamer(im1, x = 480,y = 350, max = true,nw = 22, test = 0)
sm4 = Rseamer(im1, x = 480,y = 350, max = false,nw = 2, test = 0)

vcmohan · 18th March 2008, 12:15

This Seamer plugin has been revamped completely. It is now having two functions viz. TRSeamer and WSSeamer.

It is possible to reduce as well as enlarge images. The results are:
enlarge width, reduce height by both functions. TRSeamer on top.

Enlarging both w and h by TRSeamer.

Reducing both w and h by TRSeamer

The functions run very slow. No supervision is possible as of now.

SSH4 · 27th September 2010, 19:07

Wow!
And no one reply!
On Adobe CS5 it called Content Aware Scaling
Thanx! I want play with 4x3 -> 16x9 conversions

Mounir · 29th September 2010, 19:02

What's the purpose of such plugin? Enlighten me.

I don't know but generating waves and other weird effetcs in a picture don't make "tilt" in my head.

11th March 2008, 10:20	#1 \| Link
vcmohan Registered User Join Date: Jul 2003 Location: India Posts: 912	Seamer : Seam Carving Plugin Considerable interest was generated when a new technique named as "Seam Carving for Content-Aware Image Resizing" was presented in a paper by Shai Avidan and Ariel Shamir. Recently there was a reference to seam carving in one of Avisynth threads also. On seeing this post in this forum, due to curiosity I attempted two approaches to acheive seam carving in a fully unsupervised mode. The results are displayed here. They are most unsatisfactory. The reason being that I have yet to formulate a criterion as to what is a valid or acceptable seam that is universally ( or largely) suitable for carving. May be some one guides me in this. Below are two sets of images. Each set shows the input image, and 4 variants of seam carving, using the two functions RSeamer and WSeamer of Seamer plugin. set 1 : set 2: The above images were produced using script below in addition to usual source, crop, stack etc. Code: sm1 = wseamer(im1, x = 480,y = 350, max = true,nw = 2, test = 0) sm2 = wseamer(im1, x = 480,y = 350, max = false,nw = 2, test = 0) sm3 = Rseamer(im1, x = 480,y = 350, max = true,nw = 22, test = 0) sm4 = Rseamer(im1, x = 480,y = 350, max = false,nw = 2, test = 0) __________________ mohan my plugins are now hosted here Last edited by vcmohan; 19th March 2008 at 04:16. Reason: Plugin is now operational

18th March 2008, 12:15	#2 \| Link
vcmohan Registered User Join Date: Jul 2003 Location: India Posts: 912	This Seamer plugin has been revamped completely. It is now having two functions viz. TRSeamer and WSSeamer. It is possible to reduce as well as enlarge images. The results are: enlarge width, reduce height by both functions. TRSeamer on top. Enlarging both w and h by TRSeamer. Reducing both w and h by TRSeamer The functions run very slow. No supervision is possible as of now. __________________ mohan my plugins are now hosted here

27th September 2010, 19:07	#3 \| Link
SSH4 Registered User Join Date: Nov 2006 Posts: 90	Wow! And no one reply! On Adobe CS5 it called Content Aware Scaling Thanx! I want play with 4x3 -> 16x9 conversions Last edited by SSH4; 27th September 2010 at 19:11.

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29th September 2010, 19:02	#4 \| Link
Mounir Registered User Join Date: Nov 2006 Posts: 780	What's the purpose of such plugin? Enlighten me. I don't know but generating waves and other weird effetcs in a picture don't make "tilt" in my head.