const t = {uri:"content://media/external/images/media/148757"}; // Local storage file path from the camera

  <Surface style={{width: 250, height: 250}}>
        <Node
             shader={shaders.sharpen}
             uniforms={{
              factor,
              resolution: [250, 250],
               t,
            }}
         />
  </Surface>

const shaders = Shaders.create({
    sharpen: {
        frag: GLSL`
      precision highp float;
      varying vec2 uv;
      uniform sampler2D t;
      uniform float factor;
      uniform vec2 resolution; 

      void main() {
        float test = factor;
        vec2 step = 1.0 / resolution;

        vec3 texA = texture2D( t, uv + vec2(-step.x, -step.y) * 1.5 ).rgb;
        vec3 texB = texture2D( t, uv + vec2( step.x, -step.y) * 1.5 ).rgb;
        vec3 texC = texture2D( t, uv + vec2(-step.x,  step.y) * 1.5 ).rgb;
        vec3 texD = texture2D( t, uv + vec2( step.x,  step.y) * 1.5 ).rgb;
        
        vec3 around = 0.25 * (texA + texB + texC + texD);
        vec3 center = texture2D( t, uv ).rgb;
        vec3 col = center + (center - around) * factor;

        gl_FragColor = vec4(col, 1.0);
      }
    `
    }
});

const t = {uri: "https://cdn.pixabay.com/photo/2014/02/27/16/10/flowers-276014__340.jpg"}