![]() ![]() It was as smooth as a looking glass, so smooth the peaks of the Y Wyddfa massif gazing into it seemed more stunning reflected than in reality. The lake was deep, a vivid, pure blue, just like polished sapphire. ![]() There was absolutely no doubt about it.įirstly, it lay right beside the mouth of the enchanted Cwm Pwcca valley, permanently veiled in mist and famed for witchcraft and magical phenomena. Translated from original Polish by David French Read Excerpt Leo Bonhart, the man who chased, wounded, and tortured Ciri, is still on her trail. She knows she must escape to finally rejoin the Witcher and his companions-and also to conquer her worst nightmare. She is trapped.īut this is the child of prophecy, and she will not be defeated. ![]() Time does not seem to exist and there are no obvious borders or portals to cross back into her home world. Trapped in a world ruled by the Elves, separated from Geralt and her destiny, Ciri will need all her training as a fighter and sorceress to survive in the fifth novel of the Witcher, Andrzej Sapkowski’s groundbreaking epic fantasy series that inspired the hit Netflix show and the blockbuster video games.Īfter walking through the portal in the Tower of Swallows and narrowly escaping death, Ciri finds herself in a completely different world. ![]()
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![]() ![]() A scan in July showed that one of the cancers had metastasized and additional treatments would not be helpful. We skipped a few beats, but not too many.Įarlier this year, my husband and I celebrated our 40 th anniversary and vacations were enjoyed. My amazing team worked diligently to help me with the book-writing process, to develop new products, and to keep me up to speed. During this time, my staff, friends, and I continued to produce Sewing With Nancy shows, some creatively repackaged, and other brand-new episodes. I was treated with surgeries, chemotherapy, and radiation through May of 2016. Another primary cancer-breast cancer-was found four months later. As some of you may know, I was diagnosed with osteosarcoma, a type of bone cancer, in March of 2015. My retirement came as a shock to my family and me. ![]() ![]() I’ve decided to say goodbye to you-my loyal viewers, readers, and customers-with a personal note. Some might choose a gathering of close family and friends, a big party, or perhaps a quiet goodbye. There are many ways to celebrate a retirement and to say goodbye. ![]() ![]() ![]() ![]() ![]() Traditionally, the $SNR$ has been defined as the ratio of the average signal value $\mu_$ even if we have no image. But lets start with the definitions given by Wikipedia (at least for scientific purposes it is still a valuable source of information). ![]() images – it is much easier to visualize the meaning of the signal-to-noise ratio $SNR$.ĭuring my research I found some more or less valuable discussions about the calculation of the $SNR$. For electrical signals measured in voltage it may be hard to exactly imagine what the definition above means. The meaning of SNR in image processingįirst, I would like to get further down to the actual meaning of the $SNR$ in image processing. This sounds logical but also is a bit abstract and may not help you much.īasically when you look at that definition, you already see the problem: You need both, the “actual signal” and the “noise signal” in order to calculate the $SNR$. The $SNR$ is somehow defined as the ratio of signal power to the noise power. At that point in time it was basically a theoretical definition. Follow me into the rabbit hole and find out why the solution shown above actually works… SNR = SNR? The initial definition of SNRīefore I decided to write this article, I knew the term $SNR$ basically from my studies in the field of electrical engineering. But for some of you it may just begin :). snr no_star.fitsįor many people this is where the journey ends. Double q = image.variance(0) / image.variance_noise(0) įor the two images above the code gives the following results: ~/snr$. ![]() |