Change opacity for photoshop generated png
Posted: 2015-06-20T07:19:57-07:00
I'm trying to compose two images after changing opacity for one of them (created by Photoshop CS 5.5). But result is strange.
My file has transparent background. I saved it as 'png-24'.
Note appeared white background.
Please, help — what am I doing wrong?
![Image](https://d1ro8r1rbfn3jf.cloudfront.net/ms_71584/dKJxqylVvDDPPkCMv0totazOlZzYDJ/water3.png?Expires=1434896319&Signature=KJCLTj59GPqe0ZtBPt7QHM1BDsml2Wsp5zB~QUa7QKSuM2wpBwqxAT8XajHxhwJho-4nEnUYOUGE1LUJU1xPTLsyCpyfTwufxPBt8hvBxK~yVmEWEQAXKM5F4GtJ~K8fu41YYYKGVjgaTW5a5TXVi7mZHU0of6h~lxpt-JTEQeMpMJVazYruPCdEi0aI8cEVpVwgJOjYt5y9LbsVz~GgwGo-wIg6ZE-gjQmd4aPZyOTkO16nUe6dTBzhNXD8a08v16YM9wIDJlxXq7GuOZ6Kd1Eo01kVO~gMEXbNn3wzN9YH~oqYkrBCb4jDL~ByA96SxZJZ8SPlVZyS1-vN83dSSQ__&Key-Pair-Id=APKAJHEJJBIZWFB73RSA)
![Image](https://d1ro8r1rbfn3jf.cloudfront.net/ms_71584/RR2pUZy7MtHgNkOR0GS7vdFAfdn8NV/results.jpg?Expires=1434896273&Signature=DtpRmwOoBmAZ0AIpTQ01Iv7b88cz687KdQijWbA4UXJ8XhVcU~uf~9LFYtz2FkpfWu4V91roJszKY~6PfTr0~hINoziMaM~g444FjCoJTnDagoZqwGgaAsXojnlPX5TDnM8LWDpskG0j1oz4HaixM4qVrbIEcJrO9--MvkB9XDLwB6ZFicALZJWFcv9uoN9H8O~IwggeZcskYF058uqjpUI5Qs7tAFzLUsrT2i93MLXlquloYbPpK8GiIigwmk9Az8-TGsaY0qZfPJLVkIEVaUV7cBYugKRbZws~sR01Iu7N4mCcb5u5dHaojkAc1O7TV-4QkfshpO8n5M4PVCdv1Q__&Key-Pair-Id=APKAJHEJJBIZWFB73RSA)
My file has transparent background. I saved it as 'png-24'.
Note appeared white background.
Please, help — what am I doing wrong?
Code: Select all
convert logo: \( water3.png -alpha on -channel A -evaluate set 75% +channel \) -composite results.jpg
![Image](https://d1ro8r1rbfn3jf.cloudfront.net/ms_71584/dKJxqylVvDDPPkCMv0totazOlZzYDJ/water3.png?Expires=1434896319&Signature=KJCLTj59GPqe0ZtBPt7QHM1BDsml2Wsp5zB~QUa7QKSuM2wpBwqxAT8XajHxhwJho-4nEnUYOUGE1LUJU1xPTLsyCpyfTwufxPBt8hvBxK~yVmEWEQAXKM5F4GtJ~K8fu41YYYKGVjgaTW5a5TXVi7mZHU0of6h~lxpt-JTEQeMpMJVazYruPCdEi0aI8cEVpVwgJOjYt5y9LbsVz~GgwGo-wIg6ZE-gjQmd4aPZyOTkO16nUe6dTBzhNXD8a08v16YM9wIDJlxXq7GuOZ6Kd1Eo01kVO~gMEXbNn3wzN9YH~oqYkrBCb4jDL~ByA96SxZJZ8SPlVZyS1-vN83dSSQ__&Key-Pair-Id=APKAJHEJJBIZWFB73RSA)
![Image](https://d1ro8r1rbfn3jf.cloudfront.net/ms_71584/RR2pUZy7MtHgNkOR0GS7vdFAfdn8NV/results.jpg?Expires=1434896273&Signature=DtpRmwOoBmAZ0AIpTQ01Iv7b88cz687KdQijWbA4UXJ8XhVcU~uf~9LFYtz2FkpfWu4V91roJszKY~6PfTr0~hINoziMaM~g444FjCoJTnDagoZqwGgaAsXojnlPX5TDnM8LWDpskG0j1oz4HaixM4qVrbIEcJrO9--MvkB9XDLwB6ZFicALZJWFcv9uoN9H8O~IwggeZcskYF058uqjpUI5Qs7tAFzLUsrT2i93MLXlquloYbPpK8GiIigwmk9Az8-TGsaY0qZfPJLVkIEVaUV7cBYugKRbZws~sR01Iu7N4mCcb5u5dHaojkAc1O7TV-4QkfshpO8n5M4PVCdv1Q__&Key-Pair-Id=APKAJHEJJBIZWFB73RSA)