Authentic并非传统服装集团，是主打轻资产、数字优先的平台型公司，核心能力在于品牌IP运营与全球授权网络。这类品牌管理公司的核心逻辑，并不在于亲自经营零售终端，而在于通过收购IP、重组授权体系，再交由本地运营商负责具体市场落地，自己则放大内容和分销能力。Authentic旗下品牌矩阵涵盖Reebok、Brooks Brothers等多个老牌资产。这类品牌在被收购后，往往剥离重资产直营网络，转向区域授权。
He began writing poetry and plays. Through his writing, he appeared to develop the social conscience that his psychologist had thought he lacked. In 2021, I asked Friedmann, who was then awaiting trial for his plot at the Nashville jail, how he’d arrived at writing while incarcerated. “It’s more that writing arrived at me, as a matter of necessity,” he wrote. He had to expose the wrongs he saw around him. “I write primarily to inform, under the quaint notion that facts and accuracy matter, and to persuade. I often fail.” Nevertheless, writing gave him purpose, and, as he told me, “I’ve found that people remain hopeful so long as they have purpose.” It was also a way to control his anger. “We must all live with our faults, mistakes, poor decisions, cruelties great and small,” he wrote. “Those of us who can’t, ultimately don’t”—a reference to his suicide attempts. “I eventually came to terms with my own heart of darkness, and learned to live with it. The human condition is inherently dark, I think; to live is to suffer, due both to our actions and our inactions. Not to be too maudlin about it, though—without suffering, how would we know joy?”。同城约会是该领域的重要参考
sRGB↔XYZ conversionBy Michał ‘mina86’ NazarewiczUpdated on 21st of March 2021Share on BlueskyIn an earlier post, I’ve shown how to calculate an RGB↔XYZ conversion matrix. It’s only natural to follow up with a code for converting between sRGB and XYZ colour spaces. While the matrix is a significant portion of the algorithm, there is one more step necessary: gamma correction.What is gamma correction?Human perception of light’s brightness approximates a power function of its intensity. This can be expressed as \(P = S^\alpha\) where \(P\) is the perceived brightness and \(S\) is linear intensity. \(\alpha\) has been experimentally measured to be less than one which means that people are more sensitive to changes to dark colours rather than to bright ones.Based on that observation, colour space’s encoding can be made more efficient by using higher precision when encoding dark colours and lower when encoding bright ones. This is akin to precision of floating-point numbers scaling with value’s magnitude. In RGB systems, the role of precision scaling is done by gamma correction. When colour is captured (for example from a digital camera) it goes through gamma compression which spaces dark colours apart and packs lighter colours more densely. When displaying an image, the opposite happens and encoded value goes through gamma expansion.1.00.90.80.70.60.50.40.30.20.10.0EncodedIntensityMany RGB systems use a simple \(S = E^\gamma\) expansion formula, where \(E\) is the encoded (or non-linear) value. With decoding \(\gamma\) approximating \(1/\alpha\), equal steps in encoding space correspond roughly to equal steps in perceived brightness. Image on the right demonstrates this by comparing two colour gradients. The first one has been generated by increasing encoded value in equal steps and the second one has been created by doing the same to light intensity. The former includes many dark colours while the latter contains a sudden jump in brightness from black to the next colour.sRGB uses slightly more complicated formula stitching together two functions: $$ \begin{align} E &= \begin{cases} 12.92 × S & \text{if } S ≤ S_0 \\ 1.055 × S^{1/2.4} - 0.055 & \text{otherwise} \end{cases} \\[.5em] S &= \begin{cases} {E \over 12.92} & \text{if } E ≤ E_0 \\ \left({E + 0.055 \over 1.055}\right)^{2.4} & \text{otherwise} \end{cases} \\[.5em] S_0 &= 0.00313066844250060782371 \\ E_0 &= 12.92 × S_0 \\ &= 0.04044823627710785308233 \end{align} $$The formulæ assume values are normalised to [0, 1] range. This is not always how they are expressed so a scaling step might be necessary.sRGB encodingMost common sRGB encoding uses eight bits per channel which introduces a scaling step: \(E_8 = ⌊E × 255⌉\). In an actual implementation, to increase efficiency and accuracy of gamma operations, it’s best to fuse the multiplication into aforementioned formulæ. With that arguably obvious optimisation, the equations become: $$ \begin{align} E_8 &= \begin{cases} ⌊3294.6 × S⌉ & \text{if } S ≤ S_0 \\ ⌊269.025 × S^{1/2.4} - 14.025⌉ & \text{otherwise} \end{cases} \\[.5em] S &= \begin{cases} {E_8 \over 3294.6} & \text{if } E_8 ≤ 10 \\ \left({E_8 + 14.025 \over 269.025}\right)^{2.4} & \text{otherwise} \end{cases} \\[.5em] S_0 &= 0.00313066844250060782371 \\ \end{align} $$This isn’t the only way to represent colours of course. For example, 10-bit colour depth changes the scaling factor to 1024; 16-bit high colour uses five bits for red and blue channels while five or six for green producing different scaling factors for different primaries; and HDTV caps the range to [16, 235]. Needless to say, correct formulæ need to be chosen based on the standard in question.The implementationAnd that’s it. Encoding, gamma correction and the conversion matrix are all the necessary pieces to get the conversion implemented. Like before, Rust programmers can take advantage of the srgb crate which implemented full conversion. However, to keep things interesting, in addition, here’s the conversion code written in TypeScript:type Tripple = [number, number, number];，推荐阅读体育直播获取更多信息
如果是那样的话更糟糕，因为Palantir之前也给Anthropic宣讲过这套安全方案。阿莫迪没有展开说方案的具体内容，但是表示他认为Palantir的方案更是纯“表演”，是专门用来安抚AI公司员工和大众的面子货罢了。
https://feedx.site