Winston,
Quad quality 5MPix JP4 image should be 1.8-2MB size, yours is <500KB. For
image processing I recommend using compression quality 97-98% as we do.
The sensor uses Bayer mosaic, so sensor output has 5 MPix, not 3*5MPix - the
color appears during de-mosaic process. JP4 saves pixels as th
Hi, Andrey
Thank you very much. I will set the compression quality to 100 and 98,
and test it.
Best Regrad!
Yicheng-Zhang
Email: winston.zh...@blacksesame.com.cn
Teil:18516291005
Addr: 707 room, 7th floor, building 4th, No.1761, Zhangdong road, Pudong area
发件人: Andrey Filippov [ma
Hello Winston,
You may set compression quality to 100% and there will be no quantization,
compression itself will be lossless (in regular JPEG most of the image
degradation is related to de-mosaic). There will still be gamma conversion that
introduces loss, but it is less than the sensor natura
Hi Andrey,
I think the JP4 image is lossy compressed. The block is cause by that. Is there
a way to get lossless images?
Thanks.
Tao Zhang
章 涛
发件人: Winston Zhang
发送时间: 2018年3月7日 13:12
收件人: Andrey Filippov
抄送: Elphel Support ; Elphel Sales | Olga
Filippova ; Tao Zhang ; Qun Gu
; Pioneer Li
Hi Andrey, I have found the right way to get jp4 image, and download to pc.
Best Regrad!
Yicheng-Zhang
Email: winston.zh...@blacksesame.com.cn
Teil:18516291005
Addr: 707 room, 7th floor, building 4th, No.1761, Zhangdong road, Pudong area
发件人: Andrey Filippov [mailto:and...@elphel.com]
发送
Hi Andery.
Thank you very much. I have done it, and can view the jp4 image through
website. But I cannot capture the jp4 image and download to pc, can you give me
some advices?
Best Regrad!
Yicheng-Zhang
Email: winston.zh...@blacksesame.com.cn
Teil:18516291005
Addr: 707 room, 7th
Winston,
There are several ways how to set the JP4 mode:
1) set it from the camera GUI (click Camera Control Interface port #), then
click camera icon (top left), then "More details" and select color mode to jp4.
2) set with "Parameter Editor": follow Parameter Editor from the home page,
check
