ndarray和ops如何在浏览器中引入并处理图片data

Question

function preprocess(imageData) {
        const {
            width,
            height,
            data
    } = imageData;
        const dataTensor = ndarray(new Float32Array(data), [width, height, 4])
        
        const dataProcessedTensor = ndarray(new Float32Array(width * height * 3), [width, height, 3])
        //从[0,255]转化到[0,1]
        ops.divseq(dataTensor, 255)
        //获取R数据
        ops.assign(dataProcessedTensor.pick(null, null, 0), dataTensor.pick(null, null, 0))
        //获取G数据
        ops.assign(dataProcessedTensor.pick(null, null, 1), dataTensor.pick(null, null, 1))
        //获取B数据
        ops.assign(dataProcessedTensor.pick(null, null, 2), dataTensor.pick(null, null, 2))
        const preprocessedData = dataProcessedTensor.data;
        console.log('via process');
        return preprocessedData;
    }   

找不到 ndarray 和 ops 请问我该如何引用 ？谢谢 谢谢

Answer 1

scijs/ndarray，用npm安装，然后通过browserify在浏览器使用。